18. Solving a chemistry problem
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18. Solving a chemistry problem
5. Calculate the ξ-potential of polystyrene latex particles: the displacement of the color boundary of the sol during electrophoresis is а=2.5*10-2 m during the time t=60 min. The voltage applied to the ends of the electrodes is E=115 V. The distance between the electrodes is /=0.55 m. The dielectric constant of the medium is 81. The viscosity of the medium is n=1.10*10-3 Pa*s. electrical constant е0=8.85*10-12 F/m.
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