Air is compressed in a piston-cylinder assembly from p1= 10lbf/in.2, T1 = 500oR to a final volume of V2 = 1 ft3 in a process described by pv1.25 = constant. The mass of air is 0.5lb. Assuming ideal gas behavior and neglecting kinetic and potential energy effects, determine the work and the heat transfer,each in Btu, using a)constant specific heats evaluated at 500oR and b) data from table 22-E compare the results.