Problem 3: A 9-m m3 container is filled with 300kg of R-134a at 10C. What is the specific enthalpy of the R-134a in the container? Problem 4: a piston-cylinder device contains 0.6kg of steam at 200Cand0.5MPa. Steam is cooled at constant pressure until one-half of the mass condenses. a) Show the process on a T-v diagram b) Find the final temperature c) Determine the volume change