Problem 1. Use the Problem Format for this problem. Steam contained in a well-insulated cylinder piston is initially at 150 kPa, 440 K and has a volume of 1 m³. As a paddle wheel turns in the cylinder, the steam temperature rises to 720 K. During the process, the piston moves and the pressure is maintained at 150 kPa. a. Find the PV work by the steam. b. Find the shaft work by the paddle wheel. c. Find the change in entropy of the steam during the process. (Answer: 0.7453 kJ/K)

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