A stream of humid air containing 2% H2O(v) by mole and the balance dry air is to be humidified. For this purpose, 63 ft3/h liquid water is fed to the humidifier and contact with air till the system...

A stream of humid air containing 2% H2O(v) by mole and the balance dry air is to be humidified. For this purpose, 63 ft3/h liquid water is fed to the humidifier and contact with air till the system reaches equilibrium. At the outlet, liquid water rate is 40ft3/h. Calculate the volumetric flow rate (m3/s) of the humidified outlet air. (Assume all the gasses and vapors behave ideally.)