Why should we clean Mg ribbon be4 buring?

1.	Why should we clean Mg ribbon be4 buring?
Answer» It should b cleaned by sandpaper so as to remove the protective layer of MgO such that to combine readily with oxygen in air. . To remove the layer of magnesium oxide coated on that ribbon. It should be cleaned by rubbing it with sand paper No Isn\'t it Magnesium Carbonate? To remove the layer of magnesium oxide from mg ribbon.

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