Two rigid tanks are connected by a valve. Tank A contains 0.2 m³ of water at 400 kPa and 80 percent quality. Tank B contains 0.5 m³ of water at 200 kPa and 250° C. The valve is now opened, and the two tanks eventually come to the same state. Determine the amount of heat transfer in kJ, when the system reaches thermal equilibrium with the surrounding at 25° C.