71. Solving a chemistry problem
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71. Solving a chemistry problem
167. In what order should the solutions be drained: a) H3AsO3 and (NH4) 2S; b) CdCl2 and Na2S; c) H3AsO4 and (NH4)2S; d) AgNO3 and KI to obtain a colloidal system with particles bearing: a) positive electric charges; b) negative electric charges? Write the micelle formula of the resulting sol.
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