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Why should a magnesium ribbon be cleaned before burning in air?..

Answer» It should be cleaned because when it placed open then it reacts with oxygen and makes magnesium oxide and due to which it does not burns so to burn it is cleaned
It should be cleand tk remoge magnesium oxide which gets firmed due to reacrion with oxygen and ut must be remkve bcz magnesium oxide is not reactive so we should remove it to do desirable reaction
To remove magnicium oxide


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