Apiston cylinder device with a set of stops contains steam. initial pressure, temperature, and volume are 400 kpa, 300°c, and 1.5m^2. heat was removed from the system until the temperature of the system reaches 100°c at which the piston is touching the stops and the volume is 0.5m^3. a) show this process on p-v and t-v diagrams. b) determine the change in the internal energy, in kj, from the initial state to the instant the piston hits the stops. c) determine the work done, in kj, during the entire process.