A mixed aqueous solution with suspended particles is placed in a medium where each particle has a diameter of 250 µm. At 25°C, the maximum rate of CO? uptake by microorganisms is to be calculated. The surrounding liquid is saturated with CO? at 1 atm. Microorganisms are assumed to have nearly the same density as water. Water viscosity: 6.96×10?4 pa.s , Water density: 994 kg/m3, Particle density: 1.2 kg/m3 CO? solubility in water: 2×10^?4 kg mol CO?/m3, Diffusivity: DAB=2.00×10^?9 m2/s. (Use gravity g=9.81 m/s2)