An air conditioning system is to be filled from a rigid container. The container initially contains 4 kg of saturated liquid R-134a at 20C. The valve connecting this container to the air conditioning system is opened and 3.6 kg of saturated liquid R-134a flows from the container then the valve is closed. Presuming that the process is isothermal while the valve is open, determine the final quality of the R-134a in the container and the total heat transfer to satisfy the process to be isothermal.