Steam expands in a turbine steadily at a rate of 18,000 kg/h, entering at 7 MPa and

Question:

Steam expands in a turbine steadily at a rate of 18,000 kg/h, entering at 7 MPa and 600°C and leaving at 50 kPa as saturated vapor. Assuming the surroundings to be at 100 kPa and 25°C, determine
(a) The power potential of the steam at the inlet conditions and
(b) The power output of the turbine if there were no irreversibilities present.