摘要:① n(CaO2) = 0.006mol n(Ca2+) = 0.007mol m(CaO) = 0.056g ② n(H2O) = 0.003mol X = 1/2 21答案:解:⑴NaOH+HCl=NaCl+H2O NH3+HCl=NH4Cl

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