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Percentage Composition

The mass of a...

Question

The mass of a compound is $10$ g and the mass of $C O_{2}$ formed is $23$ g. Estimate the percentage of oxygen.

83

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61.2

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71.8

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25.4

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Solution

The correct option is C $61.2$ %
$%$ of Oxygen $= \frac{16}{44} \times \frac{M a s s o f C O_{2} f o r m e d}{M a s s o f o r g a n i c c o m p o u n d} \times 100$
$⟹ %$ of Oxygen $= \frac{16}{44} \times \frac{23}{10} \times 100$
$⟹ %$ of Oxygen $= 61.2 %$

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