At 1atm, an inlet air saturated with water vapor at 10C is first heated in a heater and then sprayed with liquid water of 20C to obtain an exit air of 30C and 50% humidity. Determine the following properties of exit air. (i) Humidity (H) (ii) Wet bulb temperature (Tw) (iii) Dew point (iv) Humid heat (cs) (v) Humid volume (vH) (vi) Enthalpy (Hy)