Problem 1: [30 points] A piston-cylinder system containing 0.5 Ibm of air undergoes two reversible processes as shown in the T-s diagram below. The pressure at state-1 is 400 kPa and at state-2 is 0.3 MPa. Find the following: 1. Pressure, temperature, and specific volume at each state. 2. Heat transfer and work done by each process. 3. Entropy change for each process. Assume ideal gas behavior and temperature-independent specific heat. Present your final answer in SI units. T 800 C 1 2 3 350 C S