поставте коофициенты МnO2+....HCl+MnCl2+Cl2+..H2O, ....Аl+...Cl2=...АlСl3, АlСl3+....NaOH=Аl(OH)3+....NaCl, P2O5+...KOH=...K3PO4+...H2O ,...Аl(OH)3+...H2SO4=Аl(SO4)3+...H2O
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поставте коофициенты МnO2+....HCl+MnCl2+Cl2+..H2O, ....Аl+...Cl2=...АlСl3, АlСl3+....NaOH=Аl(OH)3+....NaCl, P2O5+...KOH=...K3PO4+...H2O ,...Аl(OH)3+...H2SO4=Аl(SO4)3+...H2O
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а 4,2 б2,3,2 в3,3 г6,2,3 д 2,3,2,6