Assume that one of the cylinders of an automobile engine has a volume of 500 mL.  The engine takes in air at a pressure of 1 atm and a temperature of 20oC and compresses it to a volume of 50 mL at 100oC.  What is the final pressure (in atm) of the gas in the cylinder?

A gas mixture with a total pressure of 765 mmHg contains each of the following gases at the indicated partial pressures: 117 mmHg CO2, 225 mmHg Ar, and 190 mmHg O2. The mixture also contains helium gas.                          What mass of helium gas is present in a 12.8-L sample of this mixture at 282 K ? Express your answer in grams.

A sealed container encloses a mixture of N2(g) and O2(g). The total pressure is 4.06 atm. The temperature is  25.00°C and the volume of the container is 19.9 L. If the mass of N2 in the container is 34.6 g, what is the partial pressure of O2 (in atm) in the container?

4.00 g of hydrogen peroxide (MM = 34.02 g/mol) is placed in a sealed 252 mL container at 504 K. What is the pressure of the oxygen gas produced (in atm)? 2H2O2(l) → 2H2O(l) + O2(g)