Search results “Determining frequency factor arrhenius equation frequency”

This chemical kinetics video tutorial focuses on solving activation energy problems using the Arrhenius Equation. It explains how to calculate the activation energy, the rate constant K, and the temperature given the rate constant and activation energy. In addition, it contains example problems of calculating the rate constant k by using the frequency factor, steric factor, and the collision frequency. This chemistry video also has practice problems showing you how to calculate the activation energy from the slope of the line of a ln(k) vs 1/T graph and how to calculate the frequency factor from the y-intercept of such a graph. This tutorial contains plenty of examples and practice problems.
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Views: 27010
The Organic Chemistry Tutor

The Arrhenius Equation has a pre-exponential factor "A"
This factor is not that important, many theory revolves around it, if the collisions, the number of collisions, etc.
Just know it is almost a value you may find on databases or calculated pretty easily if you got 2 points of K vs. T
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Views: 7121
Chemical Engineering Guy

Definition of rate constant k, the pre-exponential factor A, and activation energy. How the exponential part of the Arrhenius equation depends on activation energy and temperature.
Watch the next lesson: https://www.khanacademy.org/science/chemistry/chem-kinetics/arrhenius-equation/v/forms-of-the-arrhenius-equation?utm_source=YT&utm_medium=Desc&utm_campaign=chemistry
Missed the previous lesson? https://www.khanacademy.org/science/chemistry/chem-kinetics/arrhenius-equation/v/collision-theory?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.
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Views: 160690
Khan Academy Organic Chemistry

This chemistry video tutorial focuses on the Arrhenius equation and how to derive it's many different forms within the subject of chemical kinetics.
Here is a list of topics:
1. Arrhenius Equation and the Rate Constant K
2. The units of R and the activation energy
3. Rate law expression and the concentration of reactant A
4. Frequency Factor, Collision Frequency and Steric Factor
5. Rate of Reaction, Rate Constant K, and Activation Energy
6. The Effect of a Catalyst on Activation Energy and Reaction Rate
7. Slope, Ea, and R
8. Slope Intercept Form Linear Arrhenius Equation
9. Factors Affecting the rate of the reaction - concentration, temperature, catalyst, activation energy and rate constant K
10. Arrhenius Equation / Formula Graph

Views: 127348
The Organic Chemistry Tutor

This chemistry video tutorial provides a basic introduction into the collision theory model. In order for two molecules to react, they must collide with sufficient energy and with the proper molecular orientation. This video describes the relationship of the rate of the reaction with temperature and activation energy using the arrhenius equation. As the temperature increases, the rate constant k increases, which in turn increases the rate of the reaction. Whenever a catalyst is added, the activation energy decreases which increases the value of the rate constant k which in turn increases the reaction rate. This video also includes a brief discussion into energy diagrams. The forward activation energy is the difference between the energy of the transition state / activated complex and the energy of the reactants. This video is part of the chemical kinetics series. This tutorial also discusses the difference between the collision frequency, steric factor, and the frequency factor in the arrhenius equation.
New Chemistry Video Playlist:
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Views: 20903
The Organic Chemistry Tutor

Note that the IB definition of the Arrhenius constant (A) indicates the frequency of collisions and the probability that collisions have proper orientations.
Understandings:
The Arrhenius equation uses the temperature dependence of the rate constant to determine the activation energy.
A graph of 1/T against ln k is a linear plot with gradient – Ea / R and intercept, lnA.
The frequency factor (or pre-exponential factor) (A) takes into account the frequency of collisions with proper orientations.
Applications and skills:
Analysing graphical representation of the Arrhenius equation in its linear form
Using the Arrhenius equation
Link to worksheet:
https://drive.google.com/file/d/0B3Spy779s3hPOF9NSmpYN3ZJWEk/view?usp=sharing

Views: 13731
Mike Sugiyama Jones

Using an excel program to graph temperature and reaction rate in order to determine the activation barrier (energy) and frequency factor for the given reaction.

Views: 90
Kathleen Bernat

How to use the Arrhenius equation to calculate the activation energy.
Watch the next lesson: https://www.khanacademy.org/science/chemistry/chem-kinetics/arrhenius-equation/v/maxwell-boltzmann-distribution?utm_source=YT&utm_medium=Desc&utm_campaign=chemistry
Missed the previous lesson? https://www.khanacademy.org/science/chemistry/chem-kinetics/arrhenius-equation/v/forms-of-the-arrhenius-equation?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
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Views: 93590
Khan Academy Organic Chemistry

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Q. The decomposition of ozone is important to many atmospheric reactions.
O3 (g) → O2 (g) + O (g)
A study of the kinetics of the reaction resulted in the following data:
(a) Determine the value of the frequency factor and activation energy for the reaction.
Gas constant: (8.314 J/(mol⋅K) where 1 J=1 (kg ⋅ m^2)/s^2 )
(b) Use the results of the Arrhenius analysis to predict the rate constant at 298 K.
Solution:
To determine the frequency factor and activation energy, prepare a graph of the natural log of the rate constant (ln k) versus the inverse of the temperature (1 ∕ T).
The plot is linear, as expected for Arrhenius behavior. The best fitting line has a slope of −1.12 × 104 K and a y-intercept of 26.8. Calculate the activation energy from the slope by setting the slope equal to −Ea ∕R and solving for Ea:
Calculate the frequency factor (A) by setting the intercept equal to ln A.
26.8 = ln A
A = e26.8
= 4.36 × 1011
Since the rate constants are measured in units of M−1 • s−1, the frequency factor has the same units. Consequently, we can conclude that the reaction has an activation energy of 93.1 kJ ∕ mol and a frequency factor of 4.36 × 1011 M−1 • s−1.

Views: 27
Study Force

Given two rate constants at two temperatures, you can calculate the activation energy of the reaction.
In the first 4m30s, I use the slope formula (y2-y1 / x2-x1)
In the last half, I use the Arrhenius equation to solve for Ea directly.

Views: 53269
chemistNATE

A discussion on the Arrhenius equation, which is used to quantify the temperature dependence of a reaction rate.

Views: 146315
Ben's Chem Videos

My New CHANNEL (A square Vlogs)LINK Click And Subscribe Now https://www.youtube.com/channel/UC6ERimtc5zFrn7x6Bk3HaHA
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Views: 47453
Made EJee Chemistry by Arvind Arora

Visit http://ilectureonline.com for more math and science lectures!
In this video I will find the activation energy of a reaction (example).

Views: 23179
Michel van Biezen

Visit http://ilectureonline.com for more math and science lectures!
In this video I will explain the Arrhenius equation -- the dependency of the rate constant (k) of a reaction on the temperature.

Views: 9867
Michel van Biezen

The Arrhenius Equation is discussed. In order to better discuss the different parts of this equation an example chemical reaction is looked at; the unimolecular isomerization reaction of methylisocyanide forming methylcyanide. The kintics are discussed and the reaction profile is studied. The activation energy is discussed along with how it relates to the transition state structure. The frequency factor is related to the vibrational character of the reactant molecule - the frequency of vibrations, or how often the vibrations occur. And the temperature is related to the magnitude of vibrations. The exponential factor is then related to the fraction of molecules with enough energy to overcome the activation energy barrier. The difference between the frequency factors unimolecular and bimolecular reactions is briefly discussed. Finally an example is done in which experimental data consisting of rate constants determined at different temperatures is used to determine the activation energy and frequency factor.
Introduction is filmed on location at Eukai Beach Park on the North Shore of O'ahu Hawai'i. The Volcom Pipe Pro surf contest is being held in the background. It is the quarterfinals.
For your convenience, here are links to slides, transcripts and captions:
Video slides located here:
https://drive.google.com/drive/folders/0B8Rdl1tP83Zgbmx5ZzlZMnZxOUU?usp=sharing
Video transcripts located here:
https://drive.google.com/drive/folders/0B8Rdl1tP83ZgM2hSY0NodUxzZ2s?usp=sharing
Video captions located here:
https://drive.google.com/drive/u/1/folders/0B8Rdl1tP83ZgUjRCdlM3Y0txSWs
General Chemistry II - Lecture 14 - Rate, Temperature and the Arrhenius Equation
These videos are being made because I love teaching general chemistry. Also, I want to provide clear videos that are captioned for the deaf and hard-of-hearing, as well as for international students who use English as a second language (ESL). These video lectures are being used to assess such students as well as hearing students. However, any student of general chemistry should find the lectures very useful. Clear and concise explanations, colorful notes, and simple diagrams are used. All videos are uploaded under the Creative Commons license, so please feel free to use them in any way you wish.
These videos are hard work on my part, and I enjoy making them. If you continue to watch, then you will not only learn chemistry, but also some interesting things about the state of Hawai'i. Each video normally begins with a short clip taken on location, from somewhere in the Hawaiian Islands. And if you are on the island of Maui or happen to visit, then please feel free to stop by Maui College say hello.
Enjoy and Aloha !!!
JAT
Jeffrey A Tibbitt, Ph.D
Lecturer of Chemistry
Office 'IKE 134
[email protected]
University of Hawaii - Maui College
Kahului, Hawai'i
** English Captions **

Views: 3284
Jeffrey A Tibbitt

Table of Contents:
02:12 - Activation energy
02:35 - Activation Energy Curves
03:23 - Activation Energy Curves
04:07 - Arrhenius equation
05:48 - Definitions
06:54 - 1. The rate constant for the reaction NO2(g) + O3(g) → NO3(g) + O2(g) was determined over a temperature range of 40 K, with the following results:
08:45 - 1. The rate constant for the reaction NO2(g) + O3(g) → NO3(g) + O2(g) was determined over a temperature range of 40 K, with the following results:
09:51 - 1. The rate constant for the reaction NO2(g) + O3(g) → NO3(g) + O2(g) was determined over a temperature range of 40 K, with the following results:
10:18 - 1. The rate constant for the reaction NO2(g) + O3(g) → NO3(g) + O2(g) was determined over a temperature range of 40 K, with the following results:
11:53 - 2. A reaction involving ozone is NO(g) + O3(g) → NO2(g) + O2(g). The rate constant of the reaction is 80.0 M-1s-1 at 25oC and 3000. M-1s-1 at 75oC.
a. What is the value of the activation energy of this reaction?
b. If the value of the frequency factor is 7.4 x 1012 M-1s-1, calculate the value, including the units, of the specific rate constant at 100oC or 373.15 K.
c. Calculate the temperature that the specific rate constant is k = 3505 M-1s-1.
12:47 - 2. A reaction involving ozone is NO(g) + O3(g) → NO2(g) + O2(g). The rate constant of the reaction is 80.0 M-1s-1 at 25oC and 3000. M-1s-1 at 75oC.
a. What is the value of the activation energy of this reaction?
14:48 - 2. A reaction involving ozone is NO(g) + O3(g) → NO2(g) + O2(g). The rate constant of the reaction is 80.0 M-1s-1 at 25oC and 3000. M-1s-1 at 75oC.
b. If the value of the frequency factor is 7.4 x 1012 M-1s-1, calculate the value, including the units, of the specific rate constant at 100oC or 373.15 K.
16:10 - 2. A reaction involving ozone is NO(g) + O3(g) → NO2(g) + O2(g). The rate constant of the reaction is 80.0 M-1s-1 at 25oC and 3000. M-1s-1 at 75oC.
c. Calculate the temperature that the specific rate constant is k = 3505 M-1s-1.

Views: 1560
Chemistry Physics

The activation energy of a reaction is determined by graphical means using experimental data.

Views: 14618
Eric Zuckerman

Determining the Activation Energy using the Arrhenius Equation

Views: 1206
Gino Romeo

8-15. This video provides a preliminary explanation of the pre-exponential factor and activation energy parameters that appear in the Arrhenius equation

Views: 2350
Diego Troya

This video outlines the methods for determining the energy of activation using Arrhenius Equation.
Two methods are discussed
The graphical method
Solution by equation
A sample problem to determine the energy of activation is also included.
It is assumed that the person viewing this video has some understanding of the concepts of
1. Rate law
2. Factors affecting rates of reaction
3. Equation for a straight line y=mx + b
4. Ability to determine the slope of a line
5. Properties of natural logs ln and logs to the base 10
For more on rates of reaction and energy of activation you may visit the following website
http://www.vinstan.com
http://www.vinstan.com/sch4u/rates
http://www.vinstan.com/arrhenius-equation-and-ea
The video is ideal for
AP Chemistry
IB Chemistry,
IGCSE,
CBSE,
TOPS,
A-Levels

Views: 18884
Vinstan

How to determine Arrhenius equation parameters (pre-exponential factor and activation energy) graphically

Views: 636
Kegs Chemistry

Arrhenius! The founder of physical chemistry (you now know who to blame when you're cursing physical chemistry). This video looks into the Arrhenius equation, how you can use it to calculate activation energy and the effects on temperature and activation energy in the rate constant k. All useful and potentially a shed load of marks to gain!

Views: 36916
Allery Chemistry

Nasty graph, natural logs, yuk. See if this helps you to calculate Ea from rate constant and temperature data. Only temperature and a catalyst will change the rate constant. Arrhenius worked out how.

Views: 65960
Richard Thornley

If the temperature, activation energy and frequency factor is known, the rate constant of the reaction can be calculated by using Arrhenius equation.

Views: 57
LiveTutelage

IB Chemistry Topic 6 Kinetics 16.2 Activation energy
Solving chemical kinetics problems with derived equations
PPT direct link: https://mix.office.com/watch/1wzsr4ulr2s9u
Free online Quiz SL: http://www.proprofs.com/quiz-school/story.php?title=NjAyODA3
Free onlin Quiz HL: http://www.proprofs.com/quiz-school/story.php?title=NjAyODI4
0:17 Arrhenius equation
1:06 Arrhenius plot
1:40 Determining activation energy Ea
2:09 Practice problems
PPTs and quizzes are available on http://mrweng.weebly.com/
16.2 Activation energy HL
• The Arrhenius equation uses the temperature dependence of the rate constant to determine the activation energy.
• A graph of 1/T against ln k is a linear plot with gradient – Ea/R and intercept, lnA.
• The frequency factor (or pre-exponential factor) (A) takes into account the frequency of collisions with proper orientations.
• Analysing graphical representation of the Arrhenius equation in its linear form lnk = -Ea/RT + lnA.
•Using the Arrhenius equation k = Ae^(-Ea/RT).
• Describing the relationships between temperature and rate constant; frequency factor and complexity of molecules colliding.
• Determining and evaluating values of activation energy and frequency factors from data.
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Views: 3343
Andrew Weng

This general chemistry study guide video lecture tutorial provides an overview of chemical kinetics. It contains plenty of examples, practice problems, and conceptual questions to help you to master the course. This video is especially helpful to those taking AP chemistry in high school or general chemistry in college.
Here is a list of topics:
1. How to calculate the rate of the reaction using the change in concentration and time
2. Determining the order of a reactant and the overall order of the reaction using the method of initial rates.
3. How to determine the rate equation or rate law expression
4. Calculating the rate constant K and the units of K
5. Understanding the difference between the first order, second order, and zero order reaction.
6. Equations and formulas for zero order, first, and second order reactions
7. Half Life Formula, Initial Concentration of A and Rate constant K
8. Factors affecting reaction rate – concentration, temperature, and catalyst
9. Relationship between the rate of the reaction and the concentration
10. Rate constant K, temperature, catalyst, activation energy and potential energy diagrams
11. Forward activation energy vs reverse activation energy
12. Arrhenius Equation
13. Half Life Problems and Half Life Method
14. Collision frequency, steric factor, and frequency factor
15. Reaction Mechanism – Slow Step – Rate Determining Step
16. How To Find the Intermediate and Catalyst in a Reaction Mechanism

Views: 293754
The Organic Chemistry Tutor

16.3.2 Determine activation energy (Ea) values from the Arrhenius equation by a graphical method.
Note that in the exam, you will be given the graph already plotted. Find the gradient of the line (change in y / change in x).
Multiply the gradient by the gas constant.
Change to kJ/mol (divide by 1000).

Views: 9723
Mike Sugiyama Jones

Watch this video to learn how to use the Arrhenius equation to solve for the rate constant (K), the collisional frequency factor (A), and the activation energy (E_a)!

Views: 70
Katherine Hohl

Changing temps for a reaction will change the rate constant. The equation allows this to be calculated, if you know the rate constant.

Views: 33252
Richard Thornley

CP5009 Chemical Reaction Engineering Video Lesson 1, showing the basic relationship between frequency factor and activation energy with rate constant, and the relationship between a catalyst and activation energy.
Paper: 2009/2010 Sem 1 End Semester Exam
Done By: Ranelle Mae M Solano, Choo Jia Yi, Sakinah Bte Lokman, Kuah Li Ping
Class: DCHE/FT/2B/03

Views: 3469
WATOGIOC

Determine the activation energy using the Arrhenius Equation
Learn more at: http://www.pathwaystochemistry.com/chemistry-qa/videos/determine-the-activation-energy-using-the-arrhenius-equation/

Views: 864
Pathways to Chemistry

Views: 392
RebeccaSansom

Essentials of the equation
Arrhenius plots to calculate the activation energy and the pre-exponential factor

Views: 2608
MaChemGuy

Chapter 13 #59- The activation energy of a reaction is 56.8 kJ/mol and the frequency factor is 1.5 x1011/s. Calculate the activation energy for the reaction at 25C

Views: 1565
Kevin Klausmeyer

Concept of Arrhenius Equation stating the factors on which (Pre-exponential factor, Activation Energy, Temperature and Ideal Gas constant)the Rate constant depends upon. For more such videos on Physics, Chemistry, Biology and Mathematics, request your video topic at [email protected] or contact at +91-7278520580.

Views: 15245
EDUTRAN-Education Transformed

Chemical Kinetics Made Easy: Reaction Rates and Temperature The Arrhenius Equation Episode #07
Chemical kinetics, also known as reaction kinetics, is the study of rates of chemical processes. Chemical kinetics includes investigations of how different experimental conditions can influence the speed of a chemical reaction and yield information about the reaction's mechanism and transition states, as well as the construction of mathematical models that can describe the characteristics of a chemical reaction.
In 1864, Peter Waage and Cato Guldberg pioneered the development of chemical kinetics by formulating the law of mass action, which states that the speed of a chemical reaction is proportional to the quantity of the reacting substances.
Van 't Hoff studied chemical dynamics and published in 1884 his famous "Etudes de dynamique chimique". In 1901 he was awarded by the first Nobel Prize in Chemistry "in recognition of the extraordinary services he has rendered by the discovery of the laws of chemical dynamics and osmotic pressure in solutions". After van 't Hoff, chemical kinetics deals with the experimental determination of reaction rates from which rate laws and rate constants are derived. Relatively simple rate laws exist for zero order reactions (for which reaction rates are independent of concentration), first order reactions, and second order reactions, and can be derived for others. Elementary reactions follow the law of mass action, but the rate law of stepwise reactions has to be derived by combining the rate laws of the various elementary steps, and can become rather complex. In consecutive reactions, the rate-determining step often determines the kinetics. In consecutive first order reactions, a steady state approximation can simplify the rate law. The activation energy for a reaction is experimentally determined through the Arrhenius equation and the Eyring equation. The main factors that influence the reaction rate include: the physical state of the reactants, the concentrations of the reactants, the temperature at which the reaction occurs, and whether or not any catalysts are present in the reaction.
Gorban and Yablonsky have suggested that the history of chemical dynamics can be divided into three eras. The first is the van 't Hoff wave searching for the general laws of chemical reactions and relating kinetics to thermodynamics. The second may be called the Semenov--Hinshelwood wave with emphasis on reaction mechanisms, especially for chain reactions. The third is associated with Aris and the detailed mathematical description of chemical reaction networks.
Factors affecting reaction rate
Nature of the reactants
Physical state
Surface area of solids
Concentration
Temperature
Catalysts
Source Wikipedia

Views: 248
Khaled Academy

derivation of extended form of Arrhenius equation

Views: 472
Dr. Suresh Thakur Ph.D. Chemistry

Visit http://ilectureonline.com for more math and science lectures!
In this video I will determine the rate law and the rate constant, k.

Views: 48048
Michel van Biezen

or an intro to activation energy see:
https://youtu.be/hgQDMmzSOu4
To solve for activation energy graphically see:
https://youtu.be/drnYpMng90o
In this video we will use algebra to calculate the activation energy for a reaction given a two rate constants and temperature values. The equation we use comes from combining two instances of the Arrhenius equation and allows us to determine activation energy. I go step by step through the algebra so you can solve similar problems in the future.

Views: 437
Real Chemistry

To Support our Organisation You can Paytm
+91 92205 00123(1Rs Minimum and 100Rs Maximum)
We are trying to help all students who can't afford quality education. Thanks for supporting us to upload more videos

Views: 1216
Grow Bharat

If you have rate constants at different temperatures, you can use Microsoft Excel (or OpenOffice) to find the Activation Energy.
The slope of a (ln k) vs (1/T) graph is -Ea/R. So just take the slope, flip the sign, and multiply by 8.314 ... the answer will be in J/mol
Check me out: http://www.chemistnate.com

Views: 16815
chemistNATE

This project was created with Explain Everything™ Interactive Whiteboard for iPad.

Views: 361
Lori Maffe

How to calculate different rate constant values at different temperatures.
It is easy with Arrhenius Equation.
See Reactor Engineering Course Playlist:
http://goo.gl/6e9iXj
Visit the Web-Page for EXTRA content!
www.ChemicalEngineeringGuy.com
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LIKE the video, it helps me to know what you like
SHARE the video with your friends!
SUBSCRIBE to my channel so you get my new uploads!
Contact: [email protected]
Facebook: www.facebook.com/chemical.engineering.guy

Views: 2141
Chemical Engineering Guy

Relation between the rate constant and temperature. Logarithmic and two-state logarithmic versions. The Arrhenius plot. The rate constant, temperature, and activation energy.

Views: 959
Michael Evans

An introduction to collision theory and activation energy.
Watch the next lesson: https://www.khanacademy.org/science/chemistry/chem-kinetics/arrhenius-equation/v/arrhenius-equation?utm_source=YT&utm_medium=Desc&utm_campaign=chemistry
Missed the previous lesson? https://www.khanacademy.org/science/chemistry/chem-kinetics/copy-of-kinetics/v/zero-order-reaction-with-calculus?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: 171709
Khan Academy Organic Chemistry

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