this question was already posted but i still need the bolded part.

12. 3-58) A piston-cylinder device contains 0.6 kg of steam at 300C and 0.5 MPa. 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. d. Determine the work