Steam in a piston–cylinder device initially has a volume of 0.2 m³ at 300 kPa and 540 K. The steam is compressed reversibly from 300 kPa to 700 kPa at a constant temperature of 540 K. The steam temperature in the cylinder is maintained constant during this process as a result of heat transfer to the surrounding medium at 250 K. Determine:

A. The change in entropy of the steam during this process.

B. The heat transfer during this internally reversible process.

C. The P–V work during the process.

D. The change in entropy of the surroundings during the process.

E. The change in entropy of the world (system + surroundings) during this process.