A closed system contains 0.4 kg of air (k=1.4, R=287 J/kg.K) initially at 115 kPa and 24 oC (State 1). The air is first compressed isentropically to a temperature of 122 oC (State 2) which is followed by a constant pressure expansion process that leads to a final volume (State 3) that is identical to the initial volume. Calculate: a) The volumes corresponding to all three states b) The temperature and pressure of air in its final state c) The total boundary work corresponding to the entire process (State 1 - State 3)