19. Solving a chemistry problem

3. Find the volumetric velocity of electroosmosis observed in the system: an aqueous solution of potassium chloride - a membrane of polystyrene, colored with brown fatty dye. The zeta potential is equal to 6*10-3 V, the current strength I=7*10-3 A, the specific electrical conductivity of the medium = 9*10-2 Ohm-1*m-1, the viscosity of the medium n=1*10-3 N* sec/m2, dielectric constant е=81, electrical constant е0=8.85*10-12 F/m.