black coating (Z) slowly above its surface on being heated. X + O2 Z. When hydrogen gas is passed over this heated material (Z), the black coating turns brown again and the starting metal is obtained. Identify X and Z. Write balanced chemical equations for all the reactions involved.
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A balanced chemical equation occurs when the number of the atoms involved in the reactants side is equal to the number of atoms in the products side. In this chemical reaction, nitrogen (N2) reacts with hydrogen (H) to produce ammonia (NH3).
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