An insulated, rigid tank is divided into two compartments by a frictionless, thermally conducting piston. One compartment initially contains 1 m3 of saturated water vapor at 4 MPa and the other compartment contains 1 m3 of water vapor at 20 MPa, 8008C. The piston is released and equilibrium is attained, with the piston experiencing no change of state. For the water as the system, determine: a. the final pressure, in MPa
b. the final temperature, in °C.
c. the amount of entropy produced, in kJ/K.