(6) A piston-cylinder system is filled with 0.7 kg of refrigerant-134a and is intially at a temperature of -12°C. The piston is free to move (no friction) and is surrounded by

an atmospheric pressure of 293 kPa. Assignment 3 12 EGR 202 Undergraduate Thermodynamics Dr. Andrew J. Schrader The piston has negligible mass (~0 kg) and a diameter of 25 cm. Over a At, heat is transferred to the system until the temperature reaches 0°C. Part A: Determine the final pressure (kPa) Part B: What are the phase descriptions for the refrigerant at state 1 (t=0 s) and state 2 (t = At s). Part C: Determine the change in the volume of the cylinder