Estimate the rate of absorption of pure oxygen at 10 atm and 25°C into water flowing as a film down a vertical wall 1 m high and 6 cm in width at a Reynolds number of 50 without surface ripples. Assume the diffusivity of oxygen in water is 2.5 × 10–5 cm2/s and that the mole fraction of oxygen in water at saturation for the above temperature and pressure is 2.3 × 10–4