In a Carnot engine with water as the working fluid, the high temperature is 250C and as

Question:

In a Carnot engine with water as the working fluid, the high temperature is 250C and as QH is received, the water changes from saturated liquid to saturated vapor. The water pressure at the low temperature is 100 kPa. Find TL, the cycle thermal efficiency, the heat added per kilogram, and the entropy, s, at the beginning of the heat rejection process.