10. H2O is contained in a closed constant-pressure piston/cylinder assembly at 350C, 10 MPa, with an initial volume of 8 m. The water is then cooled to 100C. The surroundings are constant at 125C. [10] (a) Determine the mass of H2O in the piston/cylinder assembly (in kg). [11] (b) Calculate the work for this process (in kJ). [12] (c) Calculate the heat transfer for this process (in kJ). [13] (d) Calculate the change in entropy for the H2O (in kJ/K). [14] (e) Calculate the change in entropy for the surroundings (in kJ/K). [15] (f) Calculate the net entropy change for this process (in kJ/K).