119. Задачка по химии №011 948

Calculate the time during which colloidal particles of mercury sulfide (density 8.17 g/cm3) with radii of 10 µm and 1 µm settle down to 30 cm. At the temperature of the experiments, the density of water is 0.9991 g/cm3, the viscosity is 1.135 cps.

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