139. Solving a chemistry problem

139. Solving a chemistry problem

At a temperature of 20 C, determine the partial concentration of a sol (number of particles / m3) having a mass concentration of c = 40 g / l at a particle density p = 4.23 g / cm3, a hydration layer thickness of 20 nm, a particle diffusion coefficient D = 8.0 * 10-12, viscosity of the dispersion medium n = 1.2 mPa * s

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