A.Zn(s)+Ag2O(s)===ZnO(s)+2Ag(s) ΔH=317.3 kJ/mol B.Zn+Ag2O===ZnO+2Ag ΔH=317.3 kJ/mol C.Zn(s)+Ag2O(s)===ZnO(s)+2Ag(s) ΔH=-317.3 kJ/mol D.2Zn(s)+2Ag2O(s)===2ZnO(s)+4Ag(s) ΔH=-317.3 kJ/mol
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