Khan Academy: 2757 products
Khan Academy is an organization on a mission. We're a not-for-profit with the goal of changing education for the better by providing a free world-class education for anyone anywhere.
All of the site's resources are available to anyone. It doesn't matter if you are a student, teacher, home-schooler, principal, adult returning to the classroom after 20 years, or a friendly alien just trying to get …
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Organic chemistry: Regioselectivity, stereoselectivity, and stereospecificity
Reviewing the difference between regioselectivity, stereoselectivity, and stereospecificity in elimination reactions. Organic chemistry Sal…
VideoFree6 minutes
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Organic chemistry: UV/Vis spectroscopy
Introduction to UV/Vis spectroscopy. How this technique is used to analyze molecules with electrons in pi orbitals and nonbonding orbitals.…
VideoFree11 minutes
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Organic chemistry: Preparation of amides using DCC
The mechanism for the formation of amides from carboxylic acids and amines using dicyclohexylcarbodiimide (DCC). Organic chemistry Sal and …
VideoFree12 minutes
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Chemistry: Titration of a weak base with a strong acid (continued)
Calculating the pH for titration of weak base, ammonia, with strong acid, HCl, at the equivalence point and past the equivalence point. Che…
VideoFree15 minutes
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Organic chemistry: Proton NMR practice 2
More practice determining the structure of a molecule from the molecular formula, hydrogen deficiency index, and proton NMR spectrum. Uses …
VideoFree14 minutes
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Chemistry: Conjugate acid-base pairs
Introduction to conjugate acid-base pairs. Definition and examples of conjugate acid-base pairs. Chemistry Did you know that everything is …
VideoFree8 minutes
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Class 11 Physics (India): Derivatives of sin(x), cos(x), tan(x), eˣ & ln(x)
Learn the derivatives of several common functions. Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics (N…
VideoFree4
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Class 11 Physics (India): 𝘶-substitution: multiplying by a constant
Manipulating the expression to make u-substitution a little more obvious. Class 11 Physics (India) Let's learn, practice, and master topics…
VideoFree6
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Class 11 Physics (India) - Hindi: Work as the transfer of energy (Hindi)
Ram explains "work" as the way forces transfer energy to and from objects. Class 11 Physics (India) - Hindi To help students who prefer to …
VideoFree5
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Chemistry: Rate constant k from half-life example
Example problem showing how to find the rate constant k from the half-life of a first order reaction. Chemistry Did you know that everythin…
VideoFree6 minutes
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Organic chemistry: Alkyl halide nomenclature and classification
Common and IUPAC nomenclature of alkyl halides. Classifying primary, secondary, and tertiary alkyl halides. Organic chemistry Sal and Jay c…
VideoFree11 minutes
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Class 11 Physics (India) - Hindi: Derivation of beat frequency formula (Hindi)
In this video Ram derives the formula for beat frequency. Class 11 Physics (India) - Hindi To help students who prefer to learn by watching…
VideoFree11
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Organic chemistry: Halogenation
Halogenation is a reaction that occurs when one or more halogens are added to a substance. Halogens comprise the seventh column in the peri…
VideoFree8 minutes
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Organic chemistry: cis-trans and E-Z naming scheme for alkenes
Cis-Trans and E-Z Naming Scheme for Alkenes Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Basic u…
VideoFree5 minutes
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Class 11 Physics (India): LOL diagrams
David shows how LOL diagrams allow us to visually represent what we mean by conservation of energy as well as what we mean by an energy sys…
VideoFree15 minutes