Why should be a magnesium ribbon cleaned before burning in air

1.	Why should be a magnesium ribbon cleaned before burning in air
Answer» to remove the magenius layer In order to remove oxide layers from it To remove the protective layer of magnesium carbonate which prevents it from burning. To remove oxide layer If we dont remove it hindres the burning . We must clean the magnesium ribbon before buring, beacuse it reacts with oxygen present in atmosphere to form magnesium oxide.

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