1. A cylinder fitted with a piston contains ammonia at 50?C, 20% quality with a volume of 1 L. The ammonia expands slowly, and during this process heat is transferred to maintain a constant temperature. The process continues until all the liquid is gone. Determine the work and heat transfer for this process.
2. Water in a piston/cylinder at 400?C, 2000 kPa is expanded in a reversible adiabatic process. The specific work is measured to be 415.72 kJ /kg out. Find the final P and T and show the P-v and T-s diagrams for the process.