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: 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: 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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Class 11 Physics (India): Relative speed of sound in solids, liquids, and gases
Sounds travels at different speeds in different media Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics…
VideoFree3 minutes
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Physics: Ping pong ball launcher introduction
This video highlights the projectile (ping pong ball) launcher Physics Learn about the basic principles that govern the physical world arou…
VideoFree2 minutes
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Class 11 Physics (India): Boltzmann's constant
Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics (NCERT) starting with kinematics and then moving to d…
VideoFree10
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Class 11 Physics (India): Doppler effect formula for observed frequency
Let's derive the formula for how the perceived frequency of a sound changes when its source is moving toward you Class 11 Physics (India) L…
VideoFree10 minutes
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Chemistry: 2015 AP Chemistry free response 1d
Calculating which metal will transfer more electrons in a metal-air battery. From 2015 AP Chemistry free response 1d. Chemistry Did you kno…
VideoFree11 minutes
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Chemistry: Elementary rate laws
How to write rate laws for unimolecular and bimolecular elementary reactions. Chemistry Did you know that everything is made out of chemica…
VideoFree6 minutes
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Organic chemistry: Complex splitting
Predicting the splitting pattern when a proton has two different kinds of neighboring protons using a splitting tree. Organic chemistry Sal…
VideoFree8 minutes
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Chemistry: Organic hybridization practice
Examples of identifying hybridization and geometry for atoms in organic molecules. Chemistry Did you know that everything is made out of ch…
VideoFree10 minutes
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Chemistry: Heterogeneous equilibrium
Ignoring the solvent or the solid state molecules when calculating the equilibrium constant. Chemistry Did you know that everything is made…
VideoFree9 minutes
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Organic chemistry: Naming benzene derivatives introduction
Naming benzene derivatives introduction. Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Basic unde…
VideoFree9 minutes
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Organic chemistry: Aldehyde introduction
Aldehyde introduction. Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Basic understanding of basic…
VideoFree8 minutes
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Class 11 Physics (India): Worked example: matching an input to a function's output (graph)
Sal finds the input value for which g(x)=-2 given the graph of g. Class 11 Physics (India) Let's learn, practice, and master topics of clas…
VideoFree1
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Chemistry: 2015 AP Chemistry free response 3a
Net-ionic equation for a weak base titrated with HCl. From 2015 AP Chemistry free response 3a. Chemistry Did you know that everything is ma…
VideoFree4 minutes