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1. What is the purpose of cleaning the magnesium ribbon with steel wool? If this were not done, h...

1. What is the purpose of cleaning the magnesium ribbon with steel wool? If this were not done, how would the final results have been affected? 

2. If the magnesium does not completely react with oxygen, how will the final results be affected? 

3. If the water is not completely removed in the final heating step, how will the final results be affected? 

4. Using the periodic table, determine the formula of the magnesium nitride by-product formed in the combustion of air. If this were not treated with water to convert it to magnesium oxide, how would the final results have been affected?

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Question 1

When magnesium ribbon remains exposed in. Moist air, a white layer of magnesium oxide is formed out on its surface This hinders the burning of magnesium Hence ita necessary to remove it by rubbing with steel wool

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