Avogadro's Number - Number of molecules in a mole, 6.022x10²³

Ideal Gas Equation - An equation of the state for gases that embodies Boyle's Law, Charles's Law, and Avogadro's hypothese in the form PV=nRT

Mole - A collection of avogadro's number of objects; for example, a mole of H₂0 is 6.022x10²³ H₂0 Molecules.

Water Vapor Pressure - Added pressure on a gas collected over water due to water vapor, varies with temperature and found on a chart in the lab.