Question

Why should a magnesium ribbon be cleaned before burning in air?
ribbon is cleaned before burning in air
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Answer 1

Answer:

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 clean before burning because to remove the layer of magnesium oxide , as magnesium oxide doesn't let it burn .as it prevents it to react with the oxygen in atmosphere

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