A piston–cylinder device initially contains 50 L of liquid water at 40°C and 200 kPa. Heat is transferred to the water at constant pressure until the entire liquid is vaporized.

(a) What is the mass of the water?

(b) What is the final temperature?

(c) Determine the total enthalpy change.

(d) Show the process on a Tdiagram with respect to saturation lines.

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