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Find H rxn for the reaction
2Ag2S(s) + 2H2O(l) 4Ag(s) + 2H2S(g) + O2(g) .[ H f (Ag2S(s) ) = -32.6 kJ/mol; H f (H2S(g) ) = -20.5 kJ/mol; H f (H2O(l) ) = -285.5 kJ/mol]
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