Question

why should a magnesium ribbon should be cleaned before burning​

Answer 1

Answer:

magnesium ribbon should be cleaned before burning in air so that the layer of magnesium oxide can be removed in order to get the desired chemical reaction

Answer 2

$\large\bold{\mathtt{\red{Question }}} \:$

why should a magnesium ribbon should be cleaned before burning

____________________________________________

Answer

A magnesium ribbon is cleaned to remove the protective layer of a basic magnesium carbonate from its surface so that it may lately combined with oxygen of ear.

____________________________________________