A 6.789 g sample of a hydrocarbon, upon combustion analysis, yielded 9.883 grams of carbon dioxide. What is the percent, by mass, of carbon in the hydrocarbon?
A) 18.75 %
B) 39.73 %
C) 68.69 %
D) 45.57 %
E) 34.44 %
Correct Answer:
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