Interesting Chemistry Question (Metals And Non Metals)

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The discussion centers on the combustion of a 2 gram Magnesium (Mg) ribbon in air, resulting in the formation of Magnesium Oxide (MgO). According to the law of conservation of mass, the total mass of the products, which includes the original mass of magnesium and the mass of oxygen consumed, will exceed 2 grams. The chemical reaction is represented as 2Mg + O2 → 2MgO, confirming that the mass of the reactants equals the mass of the products.

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A 2 gram Magnesium (Mg) ribbon is burnt in air . The burnt ribbon is collected and weighed. Would it be greater than 2 grams or lesser?
 
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more than two grams because the magnesium bonds with oxygen when energy is added and forms MgO
 
The products would be equal to the mass of the reactants as it states in the law of conservation of mass.

2Mg + O2 → 2MgO

The 2 gram ribbon plus the weight of the oxygen required produces 2 grams plus the weight of the oxygen used.
 

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