Розставити коефіцієнти в схемах реакцій
Al + Fe2O3→Al2O3 + Fe;
Ca+O2→Cao;
H2O→H2 + O2;
CuS+02→CuO + SO2
Al (OH)3 → Al2O3+ H02;
Fe + H₂O →Fe3O4 + H2↑​
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