Ammonia is removed from a stream of air by absorption in water in a packed column. The air entering the column is at 760 mmHg pressure and 20°C. The air contains 5.0% v/v ammonia. Only ammonia is absorbed in the column. If the flow rate of the ammonia-air mixture to the column is 200 m³/s and the stream leaving the column contains 0.05% v/v ammonia, calculate

i. The flow rate of gas leaving the column; 

ii. The mass of ammonia absorbed; 

iii. The flow rate of water to the column, if the exit water contains 1% w/w ammonia.