60. Oxygen mass m = 200g occupies a volume V1 = 100 l and stored under pressure P1 = 200 kPa. When heated gas expands at constant pressure to a volume V2 = 300 liters, and then the pressure is increased to p2 = 500 kPa at constant volume. Find the change in internal energy of the gas, and it work perfect amount of heat transferred to the gas.

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)