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giathao
2 năm trước
hản ứng nào dưới đây không phải phản ứng thế: 2H2O + Na -> 2NaOH + H2 Mg + 2HCl -> MgCl2 + H2  CO2 + Ca(OH)2 -> CaCO3 + H2O Zn + CuSO4 -> ZnSO4 + Cu
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