Water vapor within a piston-cylinder assembly is at a temperature of 360 °c and a pressure of 1.5 bar. the piston then compresses, and the air is now at a pressure of 60 bar and a temperature of 640 °c. consider the cross sectional area of the piston to be 1.5 m 2 , the initial length of the chamber as 3m, with 40 kj of heat transferred to the surroundings. using the ideal gas model, determine: a. the mass of water vaporb. the work done on the system in the process