Which of the following choices would have a negative entropy change? A. H2O(s)−>H2O(l) B. CaCO3(s)−>CaO(s)+CO2(g) C. Fe2O3(s)+3C(s)−>2Fe(s)+3CO(g) D. N2(g)+3H2(g)−>2NH3(g)

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