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Question

Mass% of oxygen in Glucose is _____


A
53.33%
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B
55%
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C
66.33%
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D
77.88%
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Solution

The correct option is A 53.33%

Glucose is C6H12O6
Molecular mass = (6 × 12) + (12 × 1) + (6 × 16)
= 180 u
Of the 180, (16 × 6)u is contributed by oxygen.

mass % of oxygen = 96180 × 100 = 53.33 %


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