A shiny brown coloured element X on heating in air becomes black in colour.Name the element X and the black compound formed
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The shiny brown coloured element X is copper and the black compound formed is copper oxide.
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Answer:
Cu + O2 → CuO2
Explanation:
Heating or burning means reaction with Oxygen. The shiny brown element is copper and when it is heated, it reacts with O2 and becomes copper oxide.
Cu + O2 → CuO2
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