74. Solving a chemistry problem
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74. Solving a chemistry problem
6. In an experiment at 293 K, it was found that at a height of 50 μm, 595 particles of selenium hydrosol per unit volume were in a state of diffusion-sedimentation equilibrium, and at a height of 1050 μm there were 165 of these particles. The density of selenium is 4.81 g/cm3, water 1000 kg/m3, and its viscosity is 1 cps. What is the diffusion coefficient of selenium particles in water?
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