4. Ammonia is absorbed by water in a wetted-wall column being operated at 20C and 1 atm. The overall gas coefficient in 1 k mole NH3/[(m).hr.(std.atm.)]. At one point in the column, the gas contains 10 mole% ammonia and the liquid phase contains 0.155 mole ammonia per m3 of solution. 96% of the total resistance is in the gas phase. Assume Henry's law constant at 293 K = 4.247 * 10-3 std.atm/ (mole NH3/m solution). Determine the interfacial film coefficient and the interface compositions