Reviews kinetic energy and phases of matter, and explains the kinetic-molecular theory of gases.

So now that you've learned Gay-Lussac's, Charles', and Boyle's Laws... you can forget them. Well, kind of. You still need to conceptually understand how they all work. But you don't have to remember them mathematically. You can derive them all from the combined gas law.

Sample problems for using the Ideal Gas Law, PV=nRT. I do two examples here of basic questions.

This video tutorial explains how to convert gas pressure units such as torr, atm, mm Hg, kpa, and psi. Examples include gas pressure conversions torr to atm, psi to atm, atm to mm Hg, kpa to mm Hg, and psi to torr. This video contains plenty of examples and practice problems.