19. Solution to Chemistry Problem
4. If during sedimentation of quartz sand particles the dispersion medium, which was water, is replaced by hexane, then how and by how many times will their settling time change? The viscosity of water and hexane is 0.894 and 0.294 cP, respectively, and the density is 998.2 and 659.5 kg/m3. The density of sand is 2.7 cm3.
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