Microorganisms are growing in an aqueous solution in an agitator at 37oC and 1atm. Microorganisms are spherical with a diameter of 0.75 µm. The surrounding liquid of a single cell can be assumed saturated with O2. Microorganisms use oxygen for their respiration. It can be assumed that the microorganism can utilize the oxygen much faster than it can diffuse to it. Therefore, the concentration on the surface of the cells can be assumed zero. Microorganisms have a density very close to water. Search online to find the saturated oxygen concentration in water at 37oC, the density of water, the viscosity of water, and the diffusivity of oxygen in water. Consider a single cell and calculate: a. Mass transfer coefficient of oxygen uptake. b. Molar flux of oxygen towards the cell.