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5. Water flows down a vertical wall that is 1m tall and 0.25m wide without any ripples. The flowrate is 0.014kg/s. Oxygen is diffusing from the gas, which is saturated with water, into the liquid. The diffusivity of oxygen in liquid water is 2.5105cm2/s. The water in contact with the oxygen has an oxygen mole fraction of 2.3104. The water entering the top of the wall contains no oxygen and is at 15.6C. Find a. the film thickness, m b. the fluid velocity, m/s c. the Reynolds number d. the Sherwood number, averaged over the length, for short contact times e. the mass transfer coefficient, averaged over the length, for short contact times, mole/m2s f. the rate of transfer of oxygen into the falling film, mole/s