143. Solving a chemistry problem

3.32. Draw the particle distribution curves of a suspension of titanium dioxide TiO2 in butyl acetate using the following experimental data (t is the settling time for the point at which the tangent to the sedimentation curve is drawn):
t, s 60 180 300 600 900 1800
Q,% 16 44 15 12 5 8
Density of TiO2 p = 3.82 * 103 kg / m3, density of the medium p0 == 0.87 * 103 kg / m3, viscosity of the medium n = 0.79 * 10–3 H * s / m2, height H = 11 * 10 –2 m