A hydrocarbon is a compound that contains mostly carbon and hydrogen. Calculate the percent composition (by mass) of the following hydrocarbon: C 7 H 16.

Enter the percentages of carbon and hydrogen numerically to four significant figures, separated by commas.

Question

Chemistry

Hadley Lindsey

30 June, 11:23

A hydrocarbon is a compound that contains mostly carbon and hydrogen. Calculate the percent composition (by mass) of the following hydrocarbon: C 7 H 16.

Enter the percentages of carbon and hydrogen numerically to four significant figures, separated by commas.

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Answers (1)

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Carly Long · Answer 1

C7H16, where C=12.01, and H=1.01, so the weight of the molecule would be 7 (12.01) + 16 (1.01), or 100.23. The percentage of carbon would be found by ((7*12.01) / 100.23) * 100=83.88% Carbon

((16*1.01) / 100.23) * 100=16.12% Hydrogen

A hydrocarbon is a compound that contains mostly carbon and hydrogen. Calculate the percent composition (by mass) of the following hydrocarbon: C 7 H 16.Enter the percentages of carbon and hydrogen numerically to four significant figures, separated by commas.

A hydrocarbon is a compound that contains mostly carbon and hydrogen. Calculate the percent composition (by mass) of the following hydrocarbon: C 7 H 16.

Enter the percentages of carbon and hydrogen numerically to four significant figures, separated by commas.