117. Solving a chemistry problem
415. At 300 K, a colloidal solution with an effective molar mass of particles of 150 kg/mol is in the gravitational field. If at equilibrium the concentration of the colloid is 0.80 mmol/l on the surface of the solution and 1.0 mmol/l at the bottom, a) what is the height of the liquid column in the vessel ? b) what is the concentration at a height of 0.1 m from the bottom? c) what is the number of moles of colloid in a layer from 0 to 0.1 m from the bottom, if the cross-sectional area of a cylindrical vessel is 20 cm2.
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