Uzupełnij równania reakcji chemicznych.
Cu + S -> Cu₂S
H₂ + O₂ -> H₂O
Al + O₂ -> Al₂O₂
CaO + HNO₃ -> Ca(NO₃)₂ + H₂O
2Cu + S -> Cu₂S
2H₂ + O₂ -> 2H₂O
4Al + 3O₂ -> 2Al₂O₃
CaO + 2HNO₃ -> Ca(NO₃)₂ + H₂O
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2Cu + S -> Cu₂S
2H₂ + O₂ -> 2H₂O
4Al + 3O₂ -> 2Al₂O₃
CaO + 2HNO₃ -> Ca(NO₃)₂ + H₂O