37. Using the equation of sedimentation-diffusion equilibrium, calculate the height at which the concentration of Al2O3 particles with a radius of r = 1 * 10-3 m will be half that at the bottom of the vessel. Temperature 293 K, density of the dispersed phase ρ¬d.f. = 4.0*10-3 kg/m3, dispersion medium density ρ¬d.s.=1*10-3 kg/m3.

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