A compound which on thermal decomposition lives a metallic residue and a gas which relites a glowing splint.
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iron +alluminium oxide=iron oxide+alluminium
Shana24:
I think it is copper....what do u think?The coins of silver and Gold shines...
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Explanation:
(NH4)2Cr2O7 = Cr2O3(metallic residue) +4H2O + N2 (g)
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