(1). A 10.6-kg iron block at 203°C is quenched in an insulated 18.4-kg water bath initially at 18°C. After the iron and water reach thermal equilibrium with each other, what is the total change in entropy of the entire system (iron and water), in units ofkJ/K?
(2) Steam is compressed in an adiabatic, isentropic compressor at a mass flow rate of 14.9 lbm/s. Inlet conditions are 20 psia and 240°F, and the outlet pressure is 120 psia. Calculate the work power to this turbine in Btu/s.