A cylinder/piston loaded with a linear spring contains saturated moist air at 120 kPa, 0.1 m3 volume and also 0.01 kg of liquid water, all at ambient temperature 20°C. The piston area is 0.2 m2, and the spring constant is 20 kN/m. This cylinder is attached by a valve to a line flowing dry air at 800 kPa, 80°C. The valve is opened, and air flows into the cylinder until the pressure reaches 200 kPa, at which point the temperature is 40°C. Determine the relative humidity at the final state, the mass of air entering the cylinder and the work done during the process.