A piston- cylinder system containing 0.5 lbm of air undergoes two reversible processes as shown in the T-s diagram below. The pressure at state -1 is 400kPa and at state-2 is 0.3 MPa. Find the Following Pressure , temperature and specific volume at each state. Heat transfer and work done by process. Entropy change for each process. Assume ideal gas behavior and temperature - independent specific heat. Present final answer in SI units.

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