Question

A Shiny brown Coloured element On heating m air becomes black 'x' in Codourand formi a Substance Y! When hydrogen gai 'is passed aver heated Y, t again changes bacle in to 'x Ci) Name the subslances x and y Cii) Name the chemica protested Occuving during the tw changes. 3)write the balanced chemical equation

Answer 1

Explanation:

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