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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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Chemistry: Organic hybridization practice

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Examples of identifying hybridization and geometry for atoms in organic molecules. Chemistry Did you know that everything is made out of ch…

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Chemistry: Heterogeneous equilibrium

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Ignoring the solvent or the solid state molecules when calculating the equilibrium constant. Chemistry Did you know that everything is made…

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Organic chemistry: Complex splitting

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Predicting the splitting pattern when a proton has two different kinds of neighboring protons using a splitting tree. Organic chemistry Sal…

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Chemistry: 2015 AP Chemistry free response 1d

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Calculating which metal will transfer more electrons in a metal-air battery. From 2015 AP Chemistry free response 1d. Chemistry Did you kno…

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Chemistry: 2015 AP Chemistry free response 3a

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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…

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Organic chemistry: Acid-catalyzed ester hydrolysis

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The mechanism for the acid-catalyzed hydrolysis of esters (and transesterification). Organic chemistry Sal and Jay cover topics covered in …

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Organic chemistry: Naming benzene derivatives introduction

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Naming benzene derivatives introduction. Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Basic unde…

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Chemistry: Introduction to solubility and solubility product constant

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Introduction to solubility, molar solubility, and solubility product constant Ksp. Example of calculating the solubility of lead(II) chlori…

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Chemistry: Elementary rate laws

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How to write rate laws for unimolecular and bimolecular elementary reactions. Chemistry Did you know that everything is made out of chemica…

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Organic chemistry: Aldehyde introduction

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Aldehyde introduction. Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Basic understanding of basic…

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Class 11 Physics (India): Worked example: Scaling unit vectors

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Watch Sal scale up a unit vector to have a magnitude greater than 1. Class 11 Physics (India) Let's learn, practice, and master topics of c…

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Class 11 Physics (India) - Hindi: Airbus A380 take off distance (Hindi)

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How long of a runway does an A380 need? Class 11 Physics (India) - Hindi To help students who prefer to learn by watching Hindi videos, we'…

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Class 11 Physics (India): Worked example: Definite integral by thinking about the function's graph

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If you already know the area under a curve, you can use it to compute an integral. Class 11 Physics (India) Let's learn, practice, and mast…

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Class 12 Physics (India): Flux and magnetic flux

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Introduction and intuition for flux and magnetic flux. Class 12 Physics (India) It is now time to dive deeper into the world of physics wit…

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Class 11 Physics (India) - Hindi: Linear expansion numerical (Hindi)

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Ram solves a numerical about linear thermal expansion of an aluminum rod. Class 11 Physics (India) - Hindi To help students who prefer to l…