What is the mass percent of carbon in carbon dioxide?
A
0.034%
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B
27.27%
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C
3.4%
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D
28.7%
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Solution
The correct option is B27.27% Molecular formula of carbon dioxide is CO2. Molar mass of carbon dioxide is 12+2(16)=44 g/mol. Mass percentage of carbon in carbon dioxide is 1244×100=27.27%.