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Jessica James Grade: 10
magnesium ribbon is cleaned before experimentiing to remove the oxide layer but why do we need to remove the oxide layer 
\if the answer is that it is because if there is oxygen mg cant burn then why is it said tht oxygen is a good medium for burning?
2 years ago

Answers : (3)

Rijit Singh
78 Points
my friend a layer of MgO is formed on the ribbon which is a compound and is having a strong bond it covers the Mg ribbon which is made up of pure Mg atoms so the contact between the O2 gas and Mg atoms is obstructed by MgO atoms now how can O2 gas react with MgO.
2 years ago
Jessica James
51 Points
thanku for the answer 
hope its right..........
2 years ago
Rijit Singh
78 Points
Your Welcome!!!
2 years ago
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