задание Д
4 P + 5 O₂ → 2 P₂O₅
2 Mg + O₂ → 2 MgO
Si + O₂ → SiO₂
4 Al + 3 O₂ → 2 Al₂O₃
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задание Д
4 P + 5 O₂ → 2 P₂O₅
2 Mg + O₂ → 2 MgO
Si + O₂ → SiO₂
4 Al + 3 O₂ → 2 Al₂O₃