10. How many times will the sol coagulation threshold decrease if for coagulation instead of 0.5 kmol/m3 NaCl (it requires 1.2•10-6 m3 per 10•10-6 m3 sol) we use 0.036 kmol/m3 MgCl2 (0. 4•10-6 m3 per 10•10-6 m3 sol) and 0.01 kmol/m3 AlCl3 (0.1•10-6 m3 per 10•10-6 m3 sol)?

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