Răspunsuri

2014-11-02T13:21:36+02:00
2Ca+O⇒2CaO
Ca+Cl⇒CaCl₂
CaO+CO₂⇒CaCO₃
Al+S⇒Al₂S₃
Al+Cl₂⇒AlCl₂
Al+N₂⇒AlN₂
₇Al+C=Al₄c₃
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