Constants and Formulas (assume all variables not shown are constant) Pressure Unit Combined Gas Law Conversions PIV1 = PV 1 atm = 760 mmHg = 760 T1 I2 Torr = 101.325 kPa = 14.7 PSI Boyle's Law K = 'C+273 P1V1 = P2V2 Constants Avogadro's Law Vi = V2 R = 8.314 L kPa or n1 12 mol . K STP 0.0821 L atm Standard T = 0 'C mol . K Standard P = 1 atm Charles' Law Molar volume: V1 = V2 22. 4 L/mol at STP T1 T2 Dalton's Law of Partial Gay-Lussac's Law Pressure P1 = P2 P1 + P2 +.....Pn = Ptotal T1 T2 Answer on your own paper. SHOW ALL YOUR WORK, dimensional analysis and Given, Formula, Substitute, Solve. Circle final answers. Remember, temperatures must be in Kelvin and units must agree to cancel. Gas Law Problems Conversion Practice 1. Convert: 560 mmHg to atm and kPa. Boyle's Law 1. A gas has a volume of 300 mL at 300 mm Hg. What will its volume be if the pressure is changed to 500 mm Hg