An un-insulated tank having a volume of 0.5 m3 contains air at 35°C, 130 kPa, and 20 percent relative humidity. The tank is connected to a water supply line in which water flows at 50°C. Water is sprayed into the tank until the relative humidity of the air-vapor mixture is 90 percent. Determine the amount of water supplied to the tank, in kg, the final pressure of the air-vapor mixture in the tank, in kPa, and the heat transfer required during the process to maintain the air- vapor mixture in the tank at 35°C.