СРОЧНО!!!УРОВНЯТЬ МЕТАДОМ ЭЛЕКТРОННОГО ЗАРЯДА БАЛАНСА.Fe2O3+C---->Fe+CO2. SnO2+H2---->Sn+H2O.WO3+AL------>W+AL2O3.  ZnS+O2----->ZnO+SO2^.      ZnO+C------>Zn+CO2^/

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