A tray tower is to be desigend for absorption iii from air by contact with fresh water . the entering gas has a mole fraction of iii of 0.1 and the exit gas must contain a mole fraction of iii no greater than 0.0005 the water flow rate used is to be 1.5 time the minimum and the inlet air flow rate (on an iii-free basis) is 500 kg/hr. the colum is to be operated at 1 atm (760 mmHg) and 300 K. what is the flow rate in kmol/hr for this operation? we wish to determine the required stages for such water?