Given in Problem Volume (L) and Temperature (oC or K) Equation Charles Volume (L) and Pressure (atm, mmHg, kPa) Boyles Volume, Pressure, and Temperature Combined Volume, pressure, temp., moles or grams of a gas Ideal Gas Law and possibly a molar mass conversion Volume, pressure, temp., moles or grams of a non-gas, and an equation 3 step Stoich problem and Ideal Gas Law