A hydrocarbon is a compound that contains mostly carbon and hydrogen. Calculate

Question

A hydrocarbon is a compound that contains mostly carbon and hydrogen. Calculate the percent composition (by mass) of the following hydrocarbon. C10 H22
Enter the percentages of carbon and hydrogen numerically to four significant figures, separated by commas.
Thank you! A hydrocarbon is a compound that contains mostly carbon and hydrogen. Calculate the percent composition (by mass) of the following hydrocarbon. C10 H22
Enter the percentages of carbon and hydrogen numerically to four significant figures, separated by commas.
Thank you!
Enter the percentages of carbon and hydrogen numerically to four significant figures, separated by commas.
Thank you!

Explanation / Answer

The compound is C10H22

Mass of Carbon = 10 mol x 12 g/mol = 120 grams

Mass of hydrogen = 22 mol x 1.008 g/mol = 22.176 grams

Total mass = 120+22.176 == 142.176 grams

mass percentage of Carbon = (120 g / 142.176 g) x 100 = 84.40 %

Mass percentage of Hydrogen = (22.176 / 142.176) x 100 == 15.60 %

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