Liquid water at 200 kpa and 15°c is heated in a cham- ber by mixing it with superheated steam at 200 kpa and 150°c. liquid water enters the mixing chamber at a rate of 4.3 kg/s, and the chamber is estimated to lose heat to the surrounding air at 20°c at a rate of 1200 kj/min. if the mixture leaves the mixing chamber at 200 kpa and 80°c, determine (a) the mass flow rate of the superheated steam and (b) the rate of entropy generation during this mixing process