Question

why should a magnesium ribbon be cleaned before buring in air?​

Answer 1

Answer:

Because if it is dirty then it will not burn properly or may be dangerous

Answer 2

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Question

Why should a magnesium ribbon be cleaned before buring in air?

Answer

Magnesium ribbon must be cleaned before burning in air so that the the layer of magnesium oxide (which is formed due to reaction of magnesium with air) can be removed in order to get the desired chemical reaction.

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