Initially at a temperature of 89.0?C, 0.300m3 of air expands at a constant gauge pressure of 1.40×105Pa to a volume of 1.43m3 and then expands further adiabatically to a final volume of 2.30m3 and a final gauge pressure of 2.29×104Pa.
Compute the total work done by the air. CV for air is 20.8J/(mol?K)