Khan Academy: Mirror Equation Example Problems

A video lecture explaining how ray diagrams can be used to see how objects reflected off a mirror or lens could give a real or virtual image. [7:52]

A video lecture showing step-by-step how to solve a stoichiometry problem. The problem gives you a given number of grams of a molecule, and ask you to solve for how much of another molecule would be to required to completely react with...

Derive a few different forms of the Nernst equation, the relationship between Gibbs free energy and reaction quotient Q. [6:29]

Definition of rate constant k, the pre-exponential factor A, and activation energy are introduced. Understand how the exponential part of the Arrhenius equation depends on activation energy and temperature. [9:21]

Examine a vapor pressure example using the ideal gas law. [16:02]

An example of titrating a strong acid, hydrochloric acid, with a strong base barium hydroxide. Learn how to calculate the unknown concentration when you don't have a 1:1 molar ratio of H+ to OH-. [7:50]

An example using Hess's Law to calculate enthalpy change. [12:08]

What is a catalyst? This Khan Academy resource includes examples of enzymes, acid-base catalysis, and heterogeneous (or surface) catalysis.

Learn how total energy of a fluid helps explain why fluids can move from low pressure to high pressure! Rishi is a pediatric infectious disease physician and works at Khan Academy. [6:57]

This video [7:09] is an example problem involving a double slit experiment.