100. Solving a chemistry problem
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100. Solving a chemistry problem
8. Coagulation thresholds are given for (NH₄)₃PO₄ - 0.081 mmol/l, Mg(HCO₃)₂ - 51 mmol/l, Na₂SO₄ - 0.079 mmol/l. What is the charge of the sol?
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