300 kg/hr of air at 127C where its enthalpy A = 3696J/mol is heated in a heat exchanger to 227C where its enthalpy of A = 6660 J/mol by a liquid water that goes from 59C to 27C. Calculate the rate of water in (kg/min) that used in the heating process? Assume that the heat exchanger is well insulated and the Cp for water is constant with temperature and it is 75.3 (J/mol. K). (Mwt. (g/mol): Air = 29, H20 = 18)