а) 4Fe + 3O₂ = 2Fe₂O₃
б) N₂ + O₂ = 2NO
в) 4Cr + 3O₂ = 2Cr₂O₃
г) 2Ba + O₂ = 2BaO
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Answers & Comments
а) 4Fe + 3O₂ = 2Fe₂O₃
б) N₂ + O₂ = 2NO
в) 4Cr + 3O₂ = 2Cr₂O₃
г) 2Ba + O₂ = 2BaO