2 kg of air at 40 °C dry-bulb temperature and 50 % relative humidity is mixed adiabatically with 3 kg of air at 20 °C dry-bulb temperature and 12 °C dew-point temperature. Calculate the specific humidity (kg/kg dry air) and the dry-bulb temperature (°C) of the mixture. Take the barometric pressure as 1.01325 bar, the masses as masses of dry air, and saturation pressures 0.07384 bar at 40 °C and 0.01403 bar at 12 °C.