An insulated open feedwater heater (mixing box) is used in a steam power plant to raise the temperature of the water going into the boiler which increases the thermal efficiency. the water exits the feedwater heater as a saturated liquid at p6 with a mass flow rate of m6. the two inlets to the feedwater heater are both at a pressure of p6. the first inlet has a temperature of t3 and second at a temperature of t5. determine the following given the properties listed below. --given values-- p6 (bar) = 5, m6 (kg/s) = 67, t3 (c) = 305, t5 (c) = 95. determine h5, the specific enthalpy (kj/kg) at the second feedwater heater inlet. determine m3, the mass flow rate (kg/s) at the first feedwater heater inlet. determine m5, the mass flow rate (kg/s) at the second feedwater heater inlet.