Consider a combined gas-steam power plant. Water for the steam cycle is heated in a well-insulated heat exchanger by the exhaust gases of the gas turbine that enter at 800 K at a rate of 110 kg/s and leave at 380 K. Water enters the heat exchanger at 200?C and 8 MPa and leaves at 350?C and 8 MPa. If the exhaust gases from the gas turbine are treated as air with constant specific heats at room temperature, the mass flow rate of water through the heat exchanger is?