Question

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

Answer 1

Magnesium ribbon must be cleaned before burning in air so that 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.

Answer 2

the magnesium ribbon should be cleaned before burning in air to remove the basic magnesium carbonate from its surface.so, it easily react with the oxygen in air.

hope this helps.

plz mark as brainliest answer.