Why magnesium.ribbon.should be rubbed before burnnibg?
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Magnesium react with oxygen to formmagnesium oxide, which does not burn. ... Magnesium ribbon is rubbedto clean of the layer of Magnesium Oxide which is formed whenMagnesium comes in contact with oxygen in the air during its storage.
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To remove the protective layer of magnesium oxide from the surface of magnesium ribbon.
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