A piston- cylinder assembly contains 3kg of acetone with 60% quality. The system is heated at constant pressure until all the acetone is vaporized. Assume that acetone is represented by the Peng robinson EOS. The vapor pressure of acetone is given by ln^sat = 10.0311 (2940.46)/(35.93)) where P is in bar and T in K. The critical properties and acentric factor of acetone are Tc = 508.0 K and Pc = 48.0 bar and =0.304 Calculate the work done if the temperature at the final state is 400 K.