8. Calculate the average value of the half coagulation time θ for the gold sol according to the following experimental data:
Coagulation time t, s 0 30 60 120 240 480
Total number of particles in 1 m3 n • 10-14 20.20 14.70 10.80 8.25 4.89 3.03
Make a conclusion about the applicability of Smoluchowski's theory to the process of coagulation of gold sol.

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