Zn + 2C = ZnC2
4Fe + 3O₂ = 2Fe₂O₃
2HgO = 2Hg + O₂
2Ca + O₂ = 2CaO
2H₂ + O₂ = 2H₂O
2SO₂+O₂ = 2SO₃
N₂ + O₂ = 2NO
Mg + 2HNO₃ = Mg(NO₃)₂+H₂
3Al(OH)₃ + 3H₂SO₄ = Al₂(SO₄)₃+6H₂O
2NaOH + H₂SO₄ = Na₂SO₄ + 2H₂O
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4Fe + 3O₂ = 2Fe₂O₃
Так нужно было...
Zn + 2C = ZnC2
4Fe + 3O₂ = 2Fe₂O₃
2HgO = 2Hg + O₂
2Ca + O₂ = 2CaO
2H₂ + O₂ = 2H₂O
2SO₂+O₂ = 2SO₃
N₂ + O₂ = 2NO
Mg + 2HNO₃ = Mg(NO₃)₂+H₂
3Al(OH)₃ + 3H₂SO₄ = Al₂(SO₄)₃+6H₂O
2NaOH + H₂SO₄ = Na₂SO₄ + 2H₂O