Problem 1 (30 points): the piston is resting on a stops, of the piston iss pair of stops, and the enclosed volume is 287 L. The mass kJ/(kg K). inder device initially contains air at 200 kPa and 27°C. At this state, n is such that a 400-kPa pressure is required to move it. The air is now until its volume has doubled (R 0.287 (a) Determine the final temperature. (b) Plot the process on the P-V diagram. (c) Calculate the work done by the air. Also, show AIR the work on the P-V diagram. (d) Determine the total heat transferred to the air. VI 0.287 m? i Pi= 200 kPa T1-27°C