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Question

Calculate the percent composition of carbon in C6H12O6 :

A
50
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B
40
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C
35.3
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D
22.1
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Solution

The correct option is B 40
Molar mass of compound :6(12.0)+12(1.01)+6(16.0)=180g/mol
Mass due to carbon =6(12.0)=72.06g/mol
composition of C=72/180×100=40

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