Superheated steam at 700 kPa and 553.15 K (280°C) flowing at the rate of 50 kg s-1 is mixed with liquid water at 313.15 K (40°C) to produce steam at 700 kPa and 473.15 K (200°C). Assuming adiabatic operation, at what rate is water supplied to the mixer? What is SG for the process? What is the irreversible feature of the process?