Calculate w for the adiabatic expansion of 1 mol of an ideal gas at an initial pressure of 2.25 bar from and initial temp of 475 K to a final temp of 322 K. Write and expression for work done in the isothermal pressure of 2.25 bar. What value of the final pressure would give the same value of w as the first part of this problem. Assume Cpm = 5R/2.