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How to Plants Absorb Water? (practice) | Khan Academy Students interpret scenarios showing why seedlings wilt after losing root hairs, how compacted soil slows diffusion, why dyes stop at the Casparian strip, and how selective uptake into the xylem works
What is thermal energy? (article) | Khan Academy All the work done by the friction force results in a transfer of energy into thermal energy of the box-floor system This thermal energy flows as heat within the box and floor, ultimately raising the temperature of both of these objects
Acid chloride formation (video) | Khan Academy My textbook shows the double bond from the Carboxylic Acid (i e , the electrons from the oxygen in the carbonyl) acting as a nucleophile and attacks the S in thionyl chloride after the lone pairs from -OH has formed =OH+ Is there some debate over how this mechanism works?
Inclines (article) | Forces and acceleration | Khan Academy The force of friction is always acting in the opposite direction of where you want the object to move In the case, the object will move down the incline, so the Ff will be up the incline
Preparation of acid anhydrides (video) | Khan Academy So this way of doing it is not always the best way, it works for acetic acid, but it doesn't work for most carboxylic acids Here's one more case where it can work, if you have a situation like this
Work energy problem with friction (video) | Khan Academy Explore the concept of conservation of energy with a twist - introducing friction! Learn how energy isn't always fully conserved due to nonconservative forces like friction Understand how potential energy converts into kinetic energy, and how friction impacts this transformation
Gabriel phthalimide synthesis (video) | Khan Academy With its selective alkylation and easy-to-follow steps, the Gabriel synthesis is a cornerstone of amine preparation in organic chemistry Let’s uncover how this method works and why it is such a powerful tool to prepare primary amines!