Réponses

2014-03-17T18:22:03+01:00
S+O₂=SO₂
3Fe+2O₂=Fe₃O₄
Mg+1/2O₂=MgO
2CuO+C=2Cu+CO₂
S+3/2O₂=SO₃
2C₄H₁₀=8CO₂+10H₂O₂