A . Ag2O(g)→2Ag(s)+(1/2)O2(g)B . Fe2O3(s)+(3/2)C(s)→2Fe+(3/2)CO2(g)C . N2O4(g)→2NO2(g)D . 6C(s)+6H2O(l)→C6H12O6(s)
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