Расставьте коэффициенты,преобразовав схемы в уравнения реакций:
Fe+CuCl - Cu+FeCl2
Zn+FeBr3 - ZnBr2+ Fe
Mg+H2O - H2+Mg(OH)2
Fe2O3+H2 - H2O+Fe
PbO+All - Al2O3+Pb
Cr2O3+Mg - MgO+Cr
All+H2O - All(OH)3+H2
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