51. Solving a chemistry problem

8. The specific surface of spherical particles of silica hydrosol is: a) 1.1*104 m2/kg; b) 1.1*105 m2/kg; c) 1.1*106 m2/kg. The density of silica is 2.7 g/cm3, the viscosity of the dispersion medium is 1*10–3 Pa*s, the temperature is 293 K. Determine the projections of the average shear of sol particles over a time of 4 s.