Calculate w for the adiabatic expansion of 1 mol of an ideal gas at an initial pressure...

Calculate w for the adiabatic expansion of 1 mol of an ideal gas at an initial pressure of 2.25 bar from an initial temperature of 475 K to a final temperature of 322 K. Write an expression for the work done in the isothermal reversible expansion of the gas at 322 K from an initial 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 that .