20. A 3.0 lbm of air are contained at 25 psia and 100°F. Given that, what is the volume of the container?

2. 0.3 kg of carbon dioxide is contained in the cylinder with the piston. Initial conditions are 200 kPa, 30 °C. It was compressed to 600 kPa by an isothermal process (a process where the temperature is constant). Find out what has been done during this process.

A container holds 75.2 liters of Oxygen at 271.4K and a pressure of 3.87 atmospheres.  How much heat is required to raise the temperature of this gas to 296.4K, holding the volume constant?  Give your answer in kJ.  Treat the gas as an ideal gas.  Note:  It is understood that your answer is in units of kilo-Joules, however do not explicitly include units in your answer.  Enter only a number.  If you do enter a unit ("kJ" in this case), you answer will be counted wrong.

1 kg of a gas at a temperature of 40° C and a pressure of 120 KPa occupies a volume of0.25m3. If the Cv of the gas = 743 J/Kg.K Find: The characteristic gas constant The molar mass and relative molecular mass The specific heat capacity at constant pressure The ratio of specific heats