Consider 0.15 kg of H₂O (liquid and vapor in equilibrium) contained in a vertical piston–cylinder arrangement at 350 K, as shown in the sketch. Initially, the piston rests on the stops, and the volume beneath the 142.8-kg piston (area of 10 cm²) is 0.001306m³. The atmospheric pressure is 100 kPa, and the local gravitational acceleration is 9.80 m/s². Energy is transferred to this arrangement until there is only saturated vapor inside. The piston moves without friction.

A. Show this process on T –V and P–V diagrams.

B. Determine the moving boundary work done by the H₂O system.