3.21. The state of an ideal gas with Cp = (5/2)R is changed from P = 1 bar and V1 = 12 m^3 to P = 12 bar and V,

= 1 m^3 by the following mechanically reversible processes: (a) Isothermal compression. (b) Adiabatic compression followed by cooling at constant pressure. (c) Adiabatic compression followed by cooling at constant volume. (d) Heating at constant volume followed by cooling at constant pressure. (e) Cooling at constant pressure followed by heating at constant volume. Calculate Q, W, AU, and AH for each of these processes, and sketch the paths of all processes on a single PV diagram.