143. Solving a chemistry problem

143. Solving a chemistry problem

3.9. Calculate how long the spherical Al2O3 particles distributed in a medium with a viscosity of 1.5 * 10-3 Pa * s settle to a height of 1 cm if the specific surface of the particles is: a) 104 m – 1; b) 105 m – 1; c) 106 m – 1. The densities of the dispersed phase and dispersion medium are 4 and 1 g / cm3, respectively.

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