Question

Why should a magnesium ribbon be cleaned before in air​

Answer 1

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Magnesium ribbon should be cleaned with sandpaper before burning in the air. ... Magnesium very reactive element which rapidly reacts with oxygen in the air to form a white layer of magnesium oxide and this layer will not burn.

Answer 2

Answer:

Magnesium ribbon should be cleaned before burning in air because magnesium reacts with oxygen vigoursly to form magnesium oxide. The layer of magnesium oxide should be cleaned by using sand paper.

Explanation:

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