K5-20 Calculate the time in which spherical particles

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5.20 Calculate the time for which spherical particles are Al2O3, dispersed in a medium having a viscosity of 1,31 • 10-3 Pa · s, are deposited on the h = 5 cm, if the specific surface area of \u200b\u200bthe particles is: a) 104 m-1; b) 105 m-1; c) 106 m-1. The densities of the dispersed phase and the dispersing medium are respectively 4 and 1 g / cm3.

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Tasks of metodichek:
"Laboratory workshop on colloid chemistry" Nekrasov AP Veretenchenko BA, Kharkiv NTU "KPI", 2004
"Characteristic features of disperse systems" Nekrasov, AP, Kharkiv, 1996
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