Problem 5. (24 points) Suppose that a molecular gas obeys the equation of state P(V- nb) = nRT, where b is a constant. a) Consider a container of argon (b = 1.4 L/mol) with an initial volume of 6.3 L, pressure of 4.20 atm, and temperature of 300 K. If it undergoes an isothermal expansion to a pressure of 1.20 atm, what is its final volume, V/? b) If the expansion described in part (a) is carried out reversibly, determine the work done on the system. c) If the expansion described in part (a) is carried out reversibly, determine the work done by the system on its environment. Problem 5 (continued) d) Starting at the same initial conditions as in part (a), the argon gas is expanded irreversibly against a constant pressure, Pea=0.10 atm, to a volume of V;. At the final volume, it reaches a temperature of 200 K. Calculate the work done on the system for this step. Note that the V, in this part of the question is the same as in part (a). e) Following the expansion in part (d), the argon gas is heated reversibly at constant volume to a final temperature of 300 K. Calculate the work on the system for this step