solution

One-half kg of a gas contained within a piston–cylinder assembly undergoes a constant-pressure process at 4 bar beginning at v1  0.72 m3 /kg. For the gas as the system, the work is 84 kJ. Determine the final volume of the gas, in m3 .

A gas is compressed from V1  0.09 m3 , p1  1 bar to V2  0.03 m3 , p2 3 bar. Pressure and volume are related linearly during the process. For the gas, find the work, in kJ.

Carbon dioxide gas in a piston–cylinder assembly expands from an initial state where p1  60 lbf/in.2 , V1  1.78 ft3 to a final pressure of p2  20 lbf/in.2 The relationship between pressure and volume during the process is pV1.3 constant. For the gas, calculate the work done, in Convert your answer to Btu.