143. Solving a chemistry problem

3.30. Calculate and plot the integral and differential distribution curves of the ZnO pigment particles in benzene using the experimental data obtained by graphically processing the sedimentation curve ( is the sedimentation time for the point at which the tangent to the sedimentation curve is drawn):
t, c 60 120 180 300 600 900 1800 3600
Q,% 40 27 14 8 4 3 2 2
The height of the subsidence N = 0.10 m; viscosity n = 0.65 * 10–3 Pa * s; the density of the dispersed phase p = 5.7 * 103 kg / m3
; the density of the dispersion medium p0 = 0.88 * 103 kg / m3.