39. Solving a chemistry problem
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4. Calculate the dispersion of spherical colloidal gold particles according to Rinde´s data: during centrifugation, the particles moved a distance of 3.2 to 4.17 cm in 25 min. The viscosity of the medium is 0.01 poise, the density of the medium is 0.988, and that of gold is 19.32 g/cm3 . The number of revolutions of the centrifuge is 5700 rpm.
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