In a petrochemical plant, steam at 320 C and 5 bar is fed into a storage tank initially containing 120 kg of water at 50 C and atmospheric pressure. The process continues until the mass of water in the storage tank doubles at a pressure of 5 bars. If during this process the amount of heat transfer to the surroundings is estimated at 658 kJ, calculate the quality of water (x) in the storage tank at the end of the process