Ok so literally I've bee stuck on this question for hours and have no idea where to go.
Steam at a quality of 90%, is expanded in a cylinder at a constant pressure of 800 kPa by adding 2000 kJ/kg of heat. Compute the entropy increase.
So far I have, using steam tables, the initial enthalpy and the initial entropy. Could anybody give me a hand to where to go from here?
... and the ones that won't