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Oxides and Oxoanions

When burning ...

Question

When burning magnesium ribbon is introduced into a jar of oxygen, it produces:

A

M g

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B

M g O

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C

M g O_{2}

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D

{M g}_{2} O_{2}

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Solution

The correct option is B $M g O$
When elemental magnesium burns in air, it combines with oxygen to form an ionic compound called magnesium oxide or $M g O$ .
$2 M g + O_{2} \to 2 M g O$

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0.486 g

of magnesium is fully oxidized, what mass of magnesium oxide should be produced?

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