Search results “Physical chemical methods of analysis”
What is ANALYTICAL CHEMISTRY? What does ANALYTICAL CHEMISTRY mean? ANALYTICAL CHEMISTRY meaning - ANALYTICAL CHEMISTRY definition - ANALYTICAL CHEMISTRY explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. Analytical chemistry studies and uses instruments and methods used to separate, identify, and quantify matter. In practice separation, identification or quantification may constitute the entire analysis or be combined with another method. Separation isolates analytes. Qualitative analysis identifies analytes, while quantitative analysis determines the numerical amount or concentration. Analytical chemistry consists of classical, wet chemical methods and modern, instrumental methods. Classical qualitative methods use separations such as precipitation, extraction, and distillation. Identification may be based on differences in color, odor, melting point, boiling point, radioactivity or reactivity. Classical quantitative analysis uses mass or volume changes to quantify amount. Instrumental methods may be used to separate samples using chromatography, electrophoresis or field flow fractionation. Then qualitative and quantitative analysis can be performed, often with the same instrument and may use light interaction, heat interaction, electric fields or magnetic fields . Often the same instrument can separate, identify and quantify an analyte. Analytical chemistry is also focused on improvements in experimental design, chemometrics, and the creation of new measurement tools. Analytical chemistry has broad applications to forensics, medicine, science and engineering.
Views: 19191 The Audiopedia
Analytical Techniques in  Chemistry  - Crash Course (Thermal Methods)
Youtube Channel (Hindi) - https://www.youtube.com/channel/UCmIchtf7_PvcAOfT5p5f6eQ Unacademy - https://unacademy.com/user/Sethi Disclaimer The information provided on this channel is a public service with the understanding that Gate Chemistry makes no warranties, either expressed or implied, related to completeness, accuracy, reliability or suitability of the information. The channel disclaims liability for errors and omissions that may have crept in its content.
Views: 9495 Gate chemistry
GCSE Science Chemistry (9-1) Filtration and Crystallisation
Watch all my videos at www.freesciencelessons.co.uk This video is for the new GCSE specifications (levels 1-9) for all exam boards. We look at two physical separation techniques used to separate mixtures: filtration and crystallisation. Image credits: All images were created by and are the property of Autonomy Education Ltd.
Views: 133041 Freesciencelessons
Titration introduction | Chemistry | Khan Academy
Introduction to acid-base titrations using example of titrating 20.0 mL of HCl of unknown concentration with 0.100 M NaOH. Covers indicators, endpoint, equivalence point, and calculating the unknown concentration. Created by Jay. Watch the next lesson: https://www.khanacademy.org/science/chemistry/acid-base-equilibrium/titrations/v/titration-calculation-example?utm_source=YT&utm_medium=Desc&utm_campaign=chemistry Missed the previous lesson? https://www.khanacademy.org/science/chemistry/acid-base-equilibrium/buffer-solutions/v/ways-to-get-a-buffer-solution?utm_source=YT&utm_medium=Desc&utm_campaign=chemistry Chemistry on Khan Academy: Did you know that everything is made out of chemicals? Chemistry is the study of matter: its composition, properties, and reactivity. This material roughly covers a first-year high school or college course, and a good understanding of algebra is helpful. About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s Chemistry channel: https://www.youtube.com/channel/UCyEot66LrwWFEMONvrIBh3A?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Electrochemistry: Crash Course Chemistry #36
You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content. Chemistry raised to the power of AWESOME! That's what Hank is talking about today with Electrochemistry. Contained within, Hank discusses electrochemical reactions, half reactions, how batteries work, galvanic cells, voltage, standard reduction potential, cell potential, electrolysis, and electro plating and the things that go into making it possible for you to watch this episode of Crash Course Chemistry! -- Table of Contents Electro Chemical Reactions 0:13 Half Reactions 1:42 How Batteries Work 1:47 Galvanic Cells 3:18 Calculating Voltage 4:12 Standard Reduction Potential 4:42 Standard Cell Potential 6:03 Electrolysis 7:24 Electroplating 7:02 -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 1227565 CrashCourse
Precipitation Reactions: Crash Course Chemistry #9
A lot of ionic compounds dissolve in water, dissociating into individual ions. But when two ions find each other that form an insoluble compound, they suddenly fall out of solution in what's called a precipitation reaction. In this episode of Crash Course Chemistry, we learn about precipitation, precipitates, anions, cations, and how to describe and discuss ionic reactions. Table of Contents Precipitate Reactions 0:34 Determining Precipitates 1:35 Writing Precipitate Reactions 6:31 Calculating Molar Mass Equation 8:52 Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 1238779 CrashCourse
The Periodic Table: Crash Course Chemistry #4
Hank gives us a tour of the most important table ever, including the life story of the obsessive man who championed it, Dmitri Mendeleev. The periodic table of elements is a concise, information-dense catalog of all of the different sorts of atoms in the universe, and it has a wealth of information to tell us if we can learn to read it. Like Crash Course? http://www.facebook.com/YouTubeCrashCourse Follow Crash Course! http://www.twitter.com/TheCrashCourse Tumbl Crash Course: http://thecrashcourse.tumblr.com Table of Contents Dmitri Mendeleev - 0:45 Mendeleev's Organization of the Periodic Table - 2:31 Relationships in the Periodic Table - 5:03 Why Mendeleev Stood Out from his Colleagues - 7:09 How the Periodic Table Could be Improved - 8:28 More info. about the cylindrical periodic table of elements: http://www.av8n.com/physics/periodic-table.htm Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 3576635 CrashCourse
Lab Techniques & Safety: Crash Course Chemistry #21
Hank takes a break from the desk to bring you to the lab in order to demonstrate some important points about the practical side of chemistry - experimentation in the laboratory. You'll learn what to wear in the lab, how to dispose of chemicals safely, how to avoid the most common accidents, how to pour solutions properly, what the HazMat diamond means, what an MSDS is, and how to use a fume hood. And as a reward for sticking with him through this maybe less-than-thrilling lecture, you'll see Hank subject himself to an exciting piece of safety apparatus. -- Table of Contents Proper Lab Attire 0:51 Disposing Chemicals Safely 6:30 Avoiding Common Lab Accidents 5:40 Proper Pouring 5:19 Hazmat Diamond 2:26 MSDS 3:05 How to use Fume Hoods 3:38 -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashC... Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 999170 CrashCourse
Determination of Physical & Chemical Properties of Soils
Soil Science, Course Code:-ET 531, Block-III
Views: 10253 ignousoet
How to Master the MCAT Chemical and Physical Sciences | Medbros
Hey guys! My name is Shaman and I am a medical school student who makes videos about all things studying. From preschool to med school, I got your back. These are just my tips that worked for me, definitely tailor them to you if need be and do your own research but I hope they still help! Let me know what you think and comment below any future videos you would like to see! Here’s my video about scoring in 100 percentile on the MCAT: https://www.youtube.com/watch?v=djAK-Bh-p2o Here’s my video about how I got straight A’s all my life: https://www.youtube.com/watch?v=PfUGeiNLJQw
Views: 32895 MedBros
Chemistry Lab - Separation of a Mixture
Shot by Paul J. Ramsey, Media Resources, Eastern Kentucky University.
Views: 59786 Paul Ramsey
Unit Conversion & Significant Figures: Crash Course Chemistry #2
A unit is the frequently arbitrary designation we have given to something to convey a definite magnitude of a physical quantity and every quantity can be expressed in terms of the seven base units that are contained in the international system of units. Hank thinks this is a thrilling subject, and while you may not agree, it is a subject that is very important if you want to be a scientist and communicate with accuracy and precision with other scientists. So listen up and learn something or Hank might have to kill you! (NOT REALLY!) Like Crash Course? http://www.facebook.com/YouTubeCrashCourse Follow Crash Course! http://www.twitter.com/TheCrashCourse Follow ThoughtCafe! http://www.twitter.com/ThoughtBubbler Tumbl Crash Course. http://thecrashcourse.tumblr.com Table of Contents Unit Conversion 02:27 Scientific Notation 03:26 Sig Figs 07:40 Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 2451836 CrashCourse
Metric System Review - Unit Conversion Measurement Tables & Dimensional Analysis
This metric system review video tutorial provides an overview / review of how to convert from one unit to another using a technique called dimensional analysis or the factor label method. It shows you how perform conversions with SI units in the metric system and in the english system including units that contain exponents such as squares and cubes. It provides unit conversion practice problems that relates to chemistry, physics, algebra, trigonometry and even pre-calculus. It contains word problems that relates to density, linear & angular speed problems, and even a few sat proportion word problems. General Chemistry Video Playlist: https://www.youtube.com/watch?v=bka20Q9TN6M&list=PL0o_zxa4K1BV-uX6wXQgyqZXvRd0tUUV0&index=3 Physics Video Playlist: https://www.youtube.com/watch?v=-6IgkG5yZfo&list=PL0o_zxa4K1BWrOyLXkHSZD4bw3yVKMwi8&index=1&t=25s Access to Premium Videos: https://www.patreon.com/MathScienceTutor Facebook: https://www.facebook.com/MathScienceTutoring/ Here is a list of topics: 1. A list / table of SI conversion factors in the english and metric system. 1 L = 1000 ml, 1 Kg = 1000 g, 1 m = 100 cm, 1 ft = 12 in, 3 ft = 1 yd, 1 ml = 1cm^3, 16 oz = 1 lb, 1 m^3 = 1000 L, 1 lb = 453.6 lb, 1 cm = 10 mm, 1 km = 0.6214 mi, 1 in = 2.54 cm, 1 qt = 946 ml 1 gal = 4 qt, 1 gal = 3.785 L, 1 mi = 5280 ft 2. An Introduction to Unit Conversion - Dimensional Analysis Single Step Conversion Example Problems: How to convert from feet to inches How to convert from kilograms to grams (mass) How to convert from milliliters to liters (volume) 3. Multi-Step Conversion Practice Problems -Tips & Tricks How to convert from kilometers to inches (distance / length) How to convert from inches to miles How to convert miles to meters 4. Unit Conversion with Exponents - Squared & Cubed - Area and Volume Metric Conversion Problems. How to convert square feet to square yards (Area) How to convert square inches to square yards How to convert cubic centimeters to cubic meters (Volume) How to convert cubic inches to cubic yards 5. Metric System Table Review (Prefixes) Tera, Giga, Mega, Kilo, Hecto, Decka, Base, Deci, Centi, Milli, Micro, Nano and Pico 6. Metric Conversions Explained - Using Scientific Notation How to convert kilometers to meters How to convert meters to nanometers (wavelength) How to convert micrometers to meters How to convert centimeters to micrometers How to convert picograms to milligrams How to convert gigaliters to kiloliters 7. Unit Conversion Problems - Physics -Speed & Velocity How to convert from m/s to mi/hr (mph) or meters per second to miles per hour How to convert km/hr to ft/s or kilometers per hour to feet per second 8. Dimensional Analysis - Time Conversions How to convert years to seconds (age related problem) How to convert light years to miles - physics word problem 9. Unit Conversions - Chemistry - Density Word Problems a) The density of Aluminum is 2.7 g/cm^3. How many kilograms of Aluminum are present in a 2.75 Liter. b) The density of gold is 19.3 g/cm^3. If the value of gold is $1300 per ounce, how much would it cost to buy a 1.75 Liter sample of gold. 10. Angular Speed & Linear Velocity Trig / Precalculus Problem a) A car has a linear speed of 35 mph. The radius of its wheels are 8.5 inches each. Calculate the angular speed of each wheel in rpm. b) A wheel makes one revolution in 125 milliseconds. The radius of the wheel is 9 inches. Calculate the linear speed of the wheel in Km/hr or kilometers per hour. 11. Dimensional Analysis - SAT Word Problems - Proportions a) If Sally can make 7 cakes in 3 hours, how many cakes can she make in 10 hours? b) A certain map has the following scale: 1in = 5.5 miles. If the distance between city A and city B is 12.6 inches on the map, what is the distance in miles between the two cities?
Spectrophotometry introduction | Kinetics | Chemistry | Khan Academy
Spectrophotometry, transmittance, absorbance and the Beer-Lambert Law. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/science/chemistry/chem-kinetics/spectrophotometry-tutorial/v/spectrophotometry-example?utm_source=YT&utm_medium=Desc&utm_campaign=chemistry Missed the previous lesson? https://www.khanacademy.org/science/chemistry/chem-kinetics/arrhenius-equation/v/catalysts?utm_source=YT&utm_medium=Desc&utm_campaign=chemistry Chemistry on Khan Academy: Did you know that everything is made out of chemicals? Chemistry is the study of matter: its composition, properties, and reactivity. This material roughly covers a first-year high school or college course, and a good understanding of algebra is helpful. About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s Chemistry channel: https://www.youtube.com/channel/UCyEot66LrwWFEMONvrIBh3A?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Views: 438550 Khan Academy
Dimensional Analysis
MIT RES.TLL-004 Concept Vignettes View the complete course: http://ocw.mit.edu/RES-TLL-004F13 Instructor: Ken Kamrin This video leads students through the problem solving method of dimensional analysis. In one example, students use dimensional analysis to determine the diameter of a parachute needed to slow a rover to 90m/s in order to safely land on Mars. License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
Views: 139186 MIT OpenCourseWare
Chemical Analysis
Chem 20
Views: 125 Lindsay Rous
What Is Analysis In Chemistry?
Understanding quantitative analysis in chemistry thoughtco. Quantitative analysis determines how much of each substance is present in a compound 17 oct 2017 chemistry, qualitative the determination chemical composition sample. Googleusercontent search. Chemical analysis wikipedia. If pollution occurs it can be detected and monitored by chemists the combination of state art instrumentation expert analysts at lucideon guarantees optimum problem solving capability using these techniques when you get a new phone, would touch with your finger various times day, so that phone learned chemical analysis sweat 2pm to all our valued customers, please informed will in limited operation over upcoming holiday period read more. Chemical analysis, the study of chemical composition and structure substances. Chemical testing and analysis intertek. Bbc bitesize national 5 chemistry chemical analysis revision 1. Analysis, determination, and measurement chemistry libretexts. An analysis provides chemical or 24 dec 2016 the craft of analytical chemistry is not in performing a routine on sample, which more appropriately called separation substance into its constituent elements, usually by means, for study and identification each component. Qualitative analysis determines what substances are present in a compound. 24 dec 2016 the first important distinction we will make is among the terms analysis, determination, and measurement. Quantitative analysis (chemistry) wikipediachemical definition of chemical by the free chemistry quantitative mass in equations (31 (30 3. Qualitative analysis is the determination of those elements and compounds that are present in a sample unknown material process breaking complex topic or substance into smaller parts order to field chemistry uses at least three ways identify components particular chemical compound (qualitative analysis), analytical chemistry, quantitative absolute relative abundance (often expressed as concentration) one, several all substance(s) analysis, physical properties composition samples matter. Analysis & separation systems chemistry. Analysis definition (chemistry) thoughtco. Qualitative analysis gives an chemical is important for checking that the environment remains healthy and safe. There are two branches in analytical chemistry qualitative analysis and quantitative. It encompasses a set of techniques that provide 21 apr 2018 quantitative analysis in chemistry tells us how much something is sample and it's important to know all or part for many chemical testing vital regulatory compliance understand the quality composition substances materials are study separation, identification, quantification components natural artificial. An experiment in the sampling of solids for chemical analysis evaluation grinding methods pellets preparation aiming at plant materials Quantitative (chemistry) wikipediachemical definition by free chemistry quantitative mass equations (31 (30 3. What is analytical chemistry? Chemistry lib
Views: 3 E Answers
Weighing on an Analytical Balance, A Chemistry Lab Demo From Thinkwell
http://www.thinkwell.com/student/product/chemistry?utm_source=youtube&utm_medium=info&utm_campaign=weighing_on_an_analytical_balance Wish Professor Yee was your teacher or tutor? He can be! Click the link to learn more about Thinkwell's Online Video Chemistry Course.
Views: 42650 ThinkwellVids
NMR spectroscopy
NMR spectroscopy lecture by Suman Bhattacharjee - This lecture explains about the NMR spectroscopy basics. Nuclear magnetic resonance spectroscopy, most commonly known as NMR spectroscopy, is a research technique that exploits the magnetic properties of certain atomic nuclei. It determines the physical and chemical properties of atoms or the molecules in which they are contained. It relies on the phenomenon of nuclear magnetic resonance and can provide detailed information about the structure, dynamics, reaction state, and chemical environment of molecules. The intramolecular magnetic field around an atom in a molecule changes the resonance frequency, thus giving access to details of the electronic structure of a molecule. Most frequently, NMR spectroscopy is used by chemists and biochemists to investigate the properties of organic molecules, although it is applicable to any kind of sample that contains nuclei possessing spin. Suitable samples range from small compounds analyzed with 1-dimensional proton or carbon-13 NMR spectroscopy to large proteins or nucleic acids using 3 or 4-dimensional techniques. The impact of NMR spectroscopy on the sciences has been substantial because of the range of information and the diversity of samples, including solutions and solids. NMR spectra are unique, well-resolved, analytically tractable and often highly predictable for small molecules. Thus, in organic chemistry practice, NMR analysis is used to confirm the identity of a substance. Different functional groups are obviously distinguishable, and identical functional groups with differing neighboring substituents still give distinguishable signals. NMR has largely replaced traditional wet chemistry tests such as color reagents for identification. A disadvantage is that a relatively large amount, 2–50 mg, of a purified substance is required, although it may be recovered. Preferably, the sample should be dissolved in a solvent, because NMR analysis of solids requires a dedicated MAS machine and may not give equally well-resolved spectra. The timescale of NMR is relatively long, and thus it is not suitable for observing fast phenomena, producing only an averaged spectrum. Although large amounts of impurities do show on an NMR spectrum, better methods exist for detecting impurities, as NMR is inherently not very sensitive. NMR spectrometers are relatively expensive; universities usually have them, but they are less common in private companies. Modern NMR spectrometers have a very strong, large and expensive liquid helium-cooled superconducting magnet, because resolution directly depends on magnetic field strength. Less expensive machines using permanent magnets and lower resolution are also available, which still give sufficient performance for certain application such as reaction monitoring and quick checking of samples. There are even benchtop NMR spectrometers. This important and well-established application of nuclear magnetic resonance will serve to illustrate some of the novel aspects of this method. To begin with, the nmr spectrometer must be tuned to a specific nucleus, in this case the proton. The actual procedure for obtaining the spectrum varies, but the simplest is referred to as the continuous wave (CW) method. A typical CW-spectrometer is shown in the following diagram. Article source - Wikipedia.org For more information, log on to- http://www.shomusbiology.com/ Get Shomu's Biology DVD set here- http://www.shomusbiology.com/dvd-store/ Download the study materials here- http://shomusbiology.com/bio-materials.html Remember Shomu’s Biology is created to spread the knowledge of life science and biology by sharing all this free biology lectures video and animation presented by Suman Bhattacharjee in YouTube. All these tutorials are brought to you for free. Please subscribe to our channel so that we can grow together. You can check for any of the following services from Shomu’s Biology- Buy Shomu’s Biology lecture DVD set- www.shomusbiology.com/dvd-store Shomu’s Biology assignment services – www.shomusbiology.com/assignment -help Join Online coaching for CSIR NET exam – www.shomusbiology.com/net-coaching We are social. Find us on different sites here- Our Website – www.shomusbiology.com Youtube- https://www.youtube.com/user/TheFunsuman Thank you for watching NMR spectroscopy lecture by Suman Bhattacharjee.
Views: 255219 Shomu's Biology
Converting Units with Conversion Factors
To see all my Chemistry videos, check out http://socratic.org/chemistry How to convert units using conversion factors and canceling units. Some people call this dimensional analysis or the factor label method, but you will call it easy after you've watched this video!
Views: 585470 Tyler DeWitt
Visual examples illustrate Beer's law, namely that absorbance is proportional to both concentration and path length. Our eyes are good colorimeters! This video is part of the Flinn Scientific Best Practices for Teaching Chemistry Video Series, a collection of over 125 hours of free professional development training for chemistry teachers - http://elearning.flinnsci.com ATTENTION: This demonstration is intended for and should only be performed by certified science instructors in a safe laboratory/classroom setting. Be sure to subscribe and check out more videos! Subscribe: https://www.youtube.com/channel/FlinnScientific/ Facebook: https://www.facebook.com/FlinnScientific/ Website: https://www.flinnsci.com/
Views: 39745 FlinnScientific
GCSE Science Chemistry (9-1) Chromatography
In this video, we look at how we can use paper chromatography to separate soluble substances and also to identify an unknown compound. Image credit: Coloured pens By RRRST (Own work) [CC BY-SA 4.0 (http://creativecommons.org/licenses/by-sa/4.0)], via Wikimedia Commons
Views: 92133 Freesciencelessons
Chemical vs. Biological Wastewater Treatment Part 1
Biological Wastewater Treatment has become increasingly questioned in recent years, especially in times of Global Warming. Biological treatment do not only emit considerable amounts of Green House Gases but also consumes vast amounts of electric power. In addition the treatment time is a fraction and hence the space needed and the investment cost also a fraction. For further information contact us [email protected]
Views: 32787 GreenForze
RSC Atomic Spectroscopy Group - Sampling and Analysis of Soil
As part of the Royal Society of Chemistry IYC Challenge this video tutorial detailing the stages undertaken when completing an analysis of a soil sample was commissioned by the Atomic Spectroscopy Group.
Chem 125. Advanced Organic Chemistry. 22. Retrosynthetic Analysis. Diels-Alder; Robinson Annulation.
UCI Chem 125 Advanced Organic Chemistry (Spring 2016) Lec 22. Retrosynthetic Analysis. Diels-Alder; Robinson Annulation. View the complete course: http://ocw.uci.edu/courses/chem_125_advanced_organic_chemistry.html Instructor: James S. Nowick, Ph.D. License: Creative Commons BY-NC-SA Terms of Use: http://ocw.uci.edu/info. More courses at http://ocw.uci.edu Description: The course builds upon the concepts and skills learned in a typical yearlong sophomore-level organic chemistry class. Topics include: The Chemical Literature and Databases; Stereochemistry and Structural Organic Chemistry; Synthetic Organic Chemistry; Mechanistic and Physical Organic Chemistry; NMR Spectroscopy. Advanced Organic Chemistry (Chem 125) is part of OpenChem: http://ocw.uci.edu/collections/open_chemistry.html This video is part of a 28-lecture junior/senior-level undergraduate-level course titled "Advanced Organic Chemistry" taught at UC Irvine by Professor James S. Nowick. Index of Topics: 0:01:23 Retrosynthetic Analysis 0:05:17 Problem 8.7 0:11:18 Robinson Annulation 0:21:28 Proposed Synthesis for Problem 8.7 0:41:45 Danishefsky Synthesis Recorded May 18, 2016. Required attribution: Nowick, James S., Advanced Organic Chemistry 125 (UCI OpenCourseWare: University of California, Irvine), http://ocw.uci.edu/courses/chem_125_advanced_organic_chemistry.html [Access date]. License: Creative Commons Attribution 3.0 United States License (http://creativecommons.org/licenses/by/3.0/us/deed.en_US).
Views: 18048 UCI Open
Converting Units With Conversion Factors
This video focuses on converting units of measurement with conversion factors. It explains how to convert units of length, time, capacity, volume, area, mass, speed / velocity, and density which is useful for students taking chemistry, math, or physics. This video on converting units of measurement is also useful for kids in 4th grade, 5th grade, and 6th grade. This tutorial contains plenty of examples and practice problems. Metric System Made Easy! https://www.youtube.com/watch?v=EQMUHIyd-0g Epic Music Mix: https://www.youtube.com/watch?v=qeljbZhx9bY Significant Figures: https://www.youtube.com/watch?v=l2yuDvwYq5g Intro To Scientific Notation: https://www.youtube.com/watch?v=_BtzXojuM1o How To Win The Tic Tac Toe Game! https://www.youtube.com/watch?v=LRlSJzBCPMM Here is a list of topics: 1. Common Conversion Factors of Length, Time, & Capacity / Volume 2. How to convert centimeters to meters - cm to m 3. Converting milliliters to Liters - mL to L 4. kilometers to centimeters - km to cm 5. Milliliters to Cubic Meters - mL to m^3 6. One step vs two step conversion practice problems 7. Multi-step dimensional analysis problems 8. meters per second to kilometers per hour - m/s to km/h 9. miles per hour to meters per second - mph to m/s or mi/hr to m/s 10. grams per milliliter to kilograms per cubic meter - g/ml to kg/m^3 11. how to convert square feet to square yards - ft^2 to yd^2 12. converting square centimeters to square meters - cm^2 to m^2 13. cubic yards to cubic feet - yd^3 to ft^3
Thermogravimetry Analysis (TGA) – online training course
In this TGA tutorial, we provide information on how Thermogravimetric Analysis (TGA) can be applied to help solve your analytical problems. TGA is a technique that measures the weight change of a material as a function of temperature or time. Its main use is to characterize materials with regard to their composition. Application areas include plastics, elastomers and thermosets, mineral compounds and ceramics, as well as a wide range of analyses in the chemical and pharmaceutical industries. Application examples presented cover the stoichiometric weight changes associated with calcium oxalate monohydrate as the sample is heated, moisture determination in a Zeolite, rubber analysis and the quantification of oil in SBR using a vacuum setup. In addition, the compositional analysis of a carbon black filled polymer, investigation of weight losses and phase transitions in kaolin, Pseudo-polymorphism, dehydration of copper sulphate pentahydrate, gypsum analysis, solvent detection using TGA-MS, calibration using curie points are also presented. The TGA includes a top-of-the-line METTLER TOLEDO ultra-micro balance with unique built-in calibration weights to ensure unbeatable accuracy. For more information on TGA (Thermogravimetry) http://www.mt.com/global/en/home/products/Laboratory_Analytics_Browse/TA_Family_Browse/TGA.html?cmp=smo_GLO_YT_LAB_OTH_Youtube_LAB_ More Thermal Analysis tutorials DSC Tutorial https://www.youtube.com/watch?v=MRJXMEIpmpU Flash DSC Tutorial https://www.youtube.com/watch?v=57PzDZCTNhY DMA Tutorial https://www.youtube.com/watch?v=wH3J4DDQWnc TMA Tutorial https://www.youtube.com/watch?v=lKNOfuW_M3A TA News http://www.mt.com/global/en/home/campaigns/product-organizations/lab/div/LAB/ta/ta-news.html?cmp=smo_GLO_YT_LAB_OTH_Youtube_LAB_ Our services offering Keep up to date on developments in thermal analysis. We offer a complete range of support services including a bi-annual thermal analysis magazine, application handbooks, videos, webinars, e-Training or classroom training courses. Visit: TA Magazine http://www.mt.com/global/en/home/applications/Application_Browse_Laboratory_Analytics/Application_Browse_thermal_analysis/TA_UserCom.html?cmp=smo_GLO_YT_LAB_OTH_Youtube_LAB_ TA Handbooks http://www.mt.com/global/en/home/applications/Application_Browse_Laboratory_Analytics/Application_Browse_thermal_analysis/TA_Appl_Handb.html?cmp=smo_GLO_YT_LAB_OTH_Youtube_LAB_ TA Videos http://www.mt.com/global/en/home/perm-lp/product-organizations/ana/ta-videos.html?cmp=smo_GLO_YT_LAB_OTH_Youtube_LAB_ TA Webinars http://www.mt.com/global/en/home/library/on-demand-webinars/lab-analytical-instruments/TA_On-Demand_Webinars.html?cmp=smo_GLO_YT_LAB_OTH_Youtube_LAB_ TA e-Training http://www.mt.com/global/en/home/events/seminars/ta-etraining.html?cmp=smo_GLO_YT_LAB_OTH_Youtube_LAB_ TA Class-room courses http://www.mt.com/global/en/home/events/seminars/product-organization/ana/TA_Training_Overview.html?cmp=smo_GLO_YT_LAB_OTH_Youtube_LAB_
Mass spectrometry part 3 : protein analysis (step by step process)
For more information, log on to- http://shomusbiology.weebly.com/ Download the study materials here- http://shomusbiology.weebly.com/bio-materials.html Mass spectrometry (MS) is an analytical technique that produces spectra (singular spectrum) of the masses of the molecules comprising a sample of material. The spectra are used to determine the elemental composition of a sample, the masses of particles and of molecules, and to elucidate the chemical structures of molecules, such as peptides and other chemical compounds. Mass spectrometry works by ionizing chemical compounds to generate charged molecules or molecule fragments and measuring their mass-to-charge ratios.[1] In a typical MS procedure, a sample, which may be solid, liquid, or gas, is ionized. The ions are separated according to their mass-to-charge ratio.[1] The ions are detected by a mechanism capable of detecting charged particles. Signal processing results are displayed as spectra of the relative abundance of ions as a function of the mass-to-charge ratio. The atoms or molecules can be identified by correlating known masses to the identified masses or through a characteristic fragmentation pattern. A mass spectrometer consists of three components: an ion source, a mass analyzer, and a detector.[2] The ionizer converts a portion of the sample into ions. There is a wide variety of ionization techniques, depending on the phase (solid, liquid, gas) of the sample and the efficiency of various ionization mechanisms for the unknown species. An extraction system removes ions from the sample, which are then trajected through the mass analyzer and onto the detector. The differences in masses of the fragments allows the mass analyzer to sort the ions by their mass-to-charge ratio. The detector measures the value of an indicator quantity and thus provides data for calculating the abundances of each ion present. Some detectors also give spatial information, e.g. a multichannel plate. Mass spectrometry has both qualitative and quantitative uses. These include identifying unknown compounds, determining the isotopic composition of elements in a molecule, and determining the structure of a compound by observing its fragmentation. Other uses include quantifying the amount of a compound in a sample or studying the fundamentals of gas phase ion chemistry (the chemistry of ions and neutrals in a vacuum). MS is now in very common use in analytical laboratories that study physical, chemical, or biological properties of a great variety of compounds. As an analytical technique it possesses distinct advantages such as: 1. Increased sensitivity over most other analytical techniques because the analyzer, as a mass-charge filter, reduces background interference 2. Excellent specificity from characteristic fragmentation patterns to identify unknowns or confirm the presence of suspected compounds. 3. Information about molecular weight. 4. Information about the isotopic abundance of elements. 5. Temporally resolved chemical data. A few of the disadvantages of the method is that often fails to distinguish between optical and geometrical isomers and the positions of substituent in o-, m- and p- positions in an aromatic ring. Also, its scope is limited in identifying hydrocarbons that produce similar fragmented ions.[3] Source of the article published in description is Wikipedia. I am sharing their material. Copyright by original content developers of Wikipedia. Link- http://en.wikipedia.org/wiki/Main_Page
Views: 59919 Shomu's Biology
Mod-11 Lec-29 Nano-particle Characterization: Bottom-Up Synthesis Methods
Particle Characterization by Dr. R. Nagarajan, Department of Chemical Engineering, IIT Madras.For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 19538 nptelhrd
Thermodynamics, PV Diagrams, Internal Energy, Heat, Work, Isothermal, Adiabatic, Isobaric, Physics
This physics video tutorial explains the concept of the first law of thermodynamics. It shows you how to solve problems associated with PV diagrams, internal energy, heat, and work. It addition, it provides plenty of examples and practice problems associated with isothermal, isochoric or isovolumetric, isobaric, and adiabatic processes. Here is a list of topics: 1. First Law of Thermodynamics - Energy Transfer 2. Internal Energy, Heat, and Mechanical Work 3. System vs Surroundings 4. Sign Conventions for Q, Heat Absorbed vs Heat Energy Released 5. Work done on the system vs work done by the system 6. Positive Work - Gas Expansion vs Negative Work - Compression 7. Open System, Closed System and Isolated System 8. Isobaric Process - Constant Pressure 9. Work Done at Constant Pressure Formula / Equation 10. Units of Pressure - Converting atm to Pa 11. Units of Volume - m^3 and L conversion 12. Converting L and atm into Joules 13. PV Diagrams - Work Done = Area Under the Curve or Area of the Shaded Region 14. Cyclic Process, Q=W, Work is Positive for Clockwise Rotation and Negative for Counter Clockwise Direction 15. Ideal Gas Law, PV=nRT 16. Charles Law - Temperature and Volume Relationship 17. Converting Celsius to Kelvin Temperature 18. Heat Transferred During Isobaric Process Formula 19. Isochoric Process - Work Done is Zero 20. Isovolumetric Process - Constant Volume, Internal Energy, and Heat Transferred Equation 21. Thermodynamics Formula Sheet Summary 22. Molar Heat Capacity at Constant Pressure and Constant Volume 23. Monatomic Gases - He, Ne, and Ar - Helium, Neon, and Argon 24. Diatomic Gases - N2, O2, and H2 25. Cv and Cp values for ideal monatomic, diatomic and polyatomic gases 26. Gamma Ratio, Cp/Cv formula 27. Isochoric Process - Pressure and Temperature Formula 28. Combined Gas Law Equation 29. Isothermal Process - Constant Temperature 30. Work Done During an Isothermal Process - Natural Logarithms Derivation - Area under Curve 31. Boyle's Law - Pressure and Volume Relationship 32. Adiabatic Process - No Heat Transferred - Q=0 33. Adiabatic Expansion - Cooling Effect of an Ideal Gas 34. Adiabatic Compression - Increase in Temperature - No spark plugs needed in an internal combustion engine of this type 35. Work, Pressure, Volume and integration Formula, Calculus - Isothermal Process 36. Pressure and Volume Formula With Gamma Ratio 37. Temperature and Volume Equation With Gamma Ratio - Adiabatic Process 38. Internal Energy - State Function - Independent of Path 39. Work and Heat - Not a State Function, Path Dependent 40. PV diagram problems, work, heat, and internal energy calculations
Setting up and Performing a Titration
This video takes you through the proper technique for setting up and performing a titration. This is the first video in a two part series on titration. Watch the second video to see how to go through the calculations after performing a titration. Carolina has everything you need for your chemistry class. Visit us at: www.carolinachemistry.com
Views: 975390 CarolinaBiological
Matric part 1 Chemistry, Analytical Chemistry - ch 1 - 9th Class Chemistry
ilmkidunya.com has brought to you Lecture of Sibghat Ullah on "9th Class Chemistry Chapter 1 Fundamentals of Chemistry . Topic 2 Branches of Chemistry". In this video follwoing sub topics have been taught: - Analytical Chemistry For more videos of Sibghat Ullah visit https://www.ilmkidunya.com/study , https://www.instutor.com This lecture is specially recorded for students of 9th class, 9th class from all Punjab Boards and is based on the current curriculum of study for Chemistry book. All these lectures are conducted in Urdu/English medium to facilitate Pakistani students.
Views: 22113 ilmkidunya
The Real Science of Forensics
In this episode of SciShow, we’re going to investigate a murder. But first, we’re going to have to learn all about forensics, the use of science in criminal law -- and the real-life version is a little different from what you might see on TV. Hosted by: Michael Aranda ---------- Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Justin Ove, Justin Lentz, David Campos, Chris Peters, and Fatima Iqbal. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow Or help support us by becoming our patron on Patreon: https://www.patreon.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow Sources: https://www.eff.org/deeplinks/2014/04/fbi-plans-have-52-million-photos-its-ngi-face-recognition-database-next-year http://www.alternet.org/story/153664/5_things_you_should_know_about_the_fbi's_massive_new_biometric_database http://www.nytimes.com/2015/08/13/us/facial-recognition-software-moves-from-overseas-wars-to-local-police.html http://www.nytimes.com/2015/08/15/opinion/how-the-fbi-uses-facial-recognition-analysis.html?_r=2 http://www.theverge.com/2014/8/8/5982727/face-wreck-how-advanced-tech-comes-up-short-for-police http://science.howstuffworks.com/life/genetic/dna-evidence.htm http://www.scientific.org/tutorials/articles/riley/riley.html http://www.bbc.co.uk/science/0/20205874 http://www.mlo-online.com/articles/201404/str-typing-method-and-applications.php http://www.cstl.nist.gov/strbase/pub_pres/Butler_BiotechniquesSuppl_Oct2007.pdf http://electronics.howstuffworks.com/gadgets/high-tech-gadgets/facial-recognition1.htm http://www.mitchpileggi.net/Deep_Background/resources/forensics/bodies.htm https://books.google.com/books?id=adKcM055ERoC&pg=PT265 http://serendip.brynmawr.edu/biology/b103/f02/web2/wcarroll.html http://www.howtogeek.com/howto/43078/stop-believing-tvs-lies-the-real-truth-about-enhancing-images/ http://nzic.org.nz/ChemProcesses/biotech/12A.pdf
Views: 716828 SciShow
Introduction to infrared spectroscopy | Spectroscopy | Organic chemistry | Khan Academy
Basic principles of spectroscopy. Light absorption and bond vibration. Created by Jay. Watch the next lesson: https://www.khanacademy.org/science/organic-chemistry/spectroscopy-jay/infrared-spectroscopy-theory/v/bonds-as-springs?utm_source=YT&utm_medium=Desc&utm_campaign=organicchemistry Organic Chemistry on Khan Academy: Carbon can form covalent bonds with itself and other elements to create a mind-boggling array of structures. In organic chemistry, we will learn about the reactions chemists use to synthesize crazy carbon based structures, as well as the analytical methods to characterize them. We will also think about how those reactions are occurring on a molecular level with reaction mechanisms. Simply put, organic chemistry is like building with molecular Legos. Let's make some beautiful organic molecules! About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s Organic Chemistry channel: https://www.youtube.com/channel/UCNKPjijOc0WEJ7DIV_Vay3g?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Enzyme immobilization
This industrial microbiology video explains enzyme immobilization processes like enzyme entrapment and cross linking used in preserving enzymes in bio-reactors. For more information, log on to- http://shomusbiology.weebly.com/ Download the study materials here- http://shomusbiology.weebly.com/bio-materials.html
Views: 44713 Shomu's Biology
Mod-01 Lec-24 Potential Evaluation of Ground water Pollution; Physical/Chemical/Biological analysis
Ground Water Hydrology by Dr. V.R. Desai & Dr. Anirban Dhar,Department of Civil Engineering,IIT Kharagpur.For more details on NPTEL visit http://nptel.ac.in
Views: 1057 nptelhrd
Mole Ratio Practice Problems
To see all my Chemistry videos, check out http://socratic.org/chemistry Lots and lots and lots of practice problems with mole ratios. This is the first step in learning stoichiometry, for using a chemical equation to get mole ratios and using conversion factors and dimensional analysis on products and reactants.
Views: 952686 Tyler DeWitt
Density Practice Problems
To see all my Chemistry videos, check out http://socratic.org/chemistry We'll practice solving density example problems. We'll look at how to use the density number like a conversion factor, to solve for mass or volume. Watch this video after the density introduction or before the more complicated video on density exercises that has unit conversion.
Views: 535473 Tyler DeWitt
Chemical Analysis & Physical Analysis of Textiles Realistic Interview, or Viva Voce
Ignore text-bookish interview videos, where you are just a ring-side observer. Instead, engage yourself in realistic professional interviews at www.InterviewMax.com. These are the type of interviews you must face, and pass – if you want to ensure a successful career in line with your hard-earned qualifications. In InterviewMax professional interviews, you are a participant and involve yourselves. You feel the heat of the interview, and experience the consequences!!! This interview (Chemical & Physical Analysis of Textiles Interview) has been extracted from the ‘Textile Production Engineering Interview Simulator and Trainer’ that has 52 topics and over 5100 questions. Chemical analysis of textiles, Fibre Identification by using different chemical reagents, End group analysis of fibres. Determination of saponification value of PET, Melting point, molecular weight measurements, Refractive index and Bi refringes, etc.Determination of moisture related properties such as absorbency, Moisture retention and moisture regain, etc. Analysis of fibre blends: Various methods such as microscopic, mechanical, chemical, etc, Factors affecting accuracy of quantitative analysis of fibre blends, Correction factors, Methods of quantitative analysis. Determination of size content, Formaldehyde and resin textiles. Aim and scope of testing, Measurement of twist, length, fineness, crimp, count, Hairiness of yarn, Yarn numbering systems and conversions. Determinations of foreign matter, Maturity of fibres.Testing of Tensile Property of fibres, Yarns & fabrics, Fabric thickness, Compressibility, Resilience, Rigidity, Drape & other properties, Associated with the fabric handle, Cloth tear test & test for bursting strength & resistance to wear.Measurement of yarn & sliver irregularity, Test for air permeability & thermal transmission. The Interview Simulator & Trainer helps every Textile Production Engineering Professional to respond meaningfully on the spot – in job interviews, viva examinations, technical presentations, client interactions etc. Want to know how it can transform your life? Visit www.InterviewMax.com. Attend your next interview or viva examination with an undue advantage! This simulator gives you the realistic professional interview experience – any number of times, until you reach the level of interaction that is required by your dream job. It is customisable! You can choose the specific topics for each of your interview/viva examinations from: Scouring & Bleaching, Textile Design & Colour, Textile Fibres, Fibre Physics, Yarn Preparation & Weaving, Analytical Textile Chemistry, Chemical & Physical Analysis of Textiles, Chemistry of Intermediates & Dyes, Applications of Textile Auxiliaries, Technology of Dyeing, Technology of Finishing, Technology of Printing, Processing of Garments, Management of Dye House, New Technologies in Textile Processing, Textile Costing, Technical Textile, Modern Spinning Technology, Modern Weaving Technology, Process Control & Quality in Spinning, Process Control & Quality in Weaving, Fashion Art & Technology, Industrial Engineering, Computer Engineering, Electrical Drives & Controls, Electrical Machines, Electronic Instrumentation, PLC & SCADA Applications, Chemical Process Safety, Corrosion Engineering, Mechanical Operations for Textile Engineers, Plastics in textile Packaging. Reliability Engineering, Project Management, Engineering Habits of Mind, Critical Thinking, 21st Century Skills, Product Design Methodology, Energy Conservation, Engineering Economics, Engineering Ethics, Ergonomics & Human Factors, Safety, Responsibility & Rights, Industrial Relations, Office/Factory Management, Operations Research, Production Management, Engineering Marketing, Behavioural Science, Finance for Engineers, Quality Assurance, World Class Manufacturing of textile production accessories. (Each of the above topics contains 80 to 110 questions.)
Views: 106 InterviewMax
Salt Analysis Preliminary Tests Edunovus Online Smart Practicals
Systematic procedure for qualitative analysis. Check out more video on: http://www.edunovusonline.com Subscribe us on YT : https://www.youtube.com/channel/UC3DpOXGFQISBnEwaf0AejZw Like us on Facebook: https://www.facebook.com/Edunovus-Online-1684890518448115/ Follow us on Twitter: https://twitter.com/Edunovusonline Mail us at : [email protected] Edunovus Online - Learning Made Easy Copyright © Edunovus Online. All rights reserved.
Views: 359861 Edunovus Online
Rust : Prevention and treatment | Chemistry for All | The Fuse School
Learn the basics about Rust, it's prevention and treatment. What causes rust? Why do only metals rust? How do you prevent rust? Find out more in this video! This Open Educational Resource is free of charge, under a Creative Commons License: Attribution-NonCommercial CC BY-NC ( View License Deed: http://creativecommons.org/licenses/by-nc/4.0/ ). You are allowed to download the video for nonprofit, educational use. If you would like to modify the video, please contact us: [email protected] SUBSCRIBE to the Fuse School YouTube channel for many more educational videos. Our teachers and animators come together to make fun & easy-to-understand videos in Chemistry, Biology, Physics, Maths & ICT. This video is part of 'Chemistry for All' - a Chemistry Education project by our Charity Fuse Foundation - the organisation behind The Fuse School. These videos can be used in a flipped classroom model or as a revision aid. Find our other Chemistry videos here: https://www.youtube.com/playlist?list=PLW0gavSzhMlReKGMVfUt6YuNQsO0bqSMV Twitter: https://twitter.com/fuseSchool Access a deeper Learning Experience in the Fuse School platform and app: www.fuseschool.org Follow us: http://www.youtube.com/fuseschool Friend us: http://www.facebook.com/fuseschool
Titration (using phenolphthalein)
*** For those who have not noticed the previous comments about the accuracy in the video: This video was made as a quick guide for one of my classes about what a titration is and it wasn't meant to be an exact representation since that would have taken longer and I wanted to get to the end point faster so they could see what happens. I explained to them that it would need to be done more accurately if they were ever to do one themselves. *** ---------- A titration experiment is used to calculate an unknown concentration of acid (or alkali) using a neutralisation reaction. In this titration an alkali (with a known concentration) is carefully added to the acid (of unknown concentration) using a burette. The volume of alkali used in the experiment is needed in order to perform a calculation to work out the concentration of the acid. The acid used in this titration is hydrochloric acid (HCl, 25ml volume, unknown concentration) and the alkali used is sodium hydroxide (NaOH, 0.1M concentration). ----- Useful equations to calculate the unknown concentration of acid: number of moles = concentration x volume concentration = number of moles ÷ volume Concentration is measured in moles per litre (moldm-3) Volume is measured in litres (decimetre cubed: dm3) ----- The equation for this reaction is: hydrochloric acid + sodium hydroxide ---- sodium chloride + water HCl + NaOH ---- NaCl + H2O (using subscript for the 2 in H2O)
Views: 1029015 Science Xperiments | sXp