Answer:
NH4)2Cr2O7(s)→Cr2O3(s)+N2(g)+4H2O(g
EXPLATION
NH4)2Cr2O7(s)→Cr2O3(s)+N2(g)+4H2O(gNH4)2Cr2O7(s)→Cr2O3(s)+N2(g)+4H2O(g
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