QUESTION 27 A hydrocarbon (a compound containing only carbon and hydrogen) is analyzed using a combustion analysis. If a 2.55 g sample of the hydrocarbon produced 8.00g of carbon dioxide and 3.28 g water, what is a possible formula of this hydrocarbon? The molar mass of carbon dioxide (CO2) is 44.01 g-mol-1, and the molar mass of water (H20) is 18.02 g-mol1. O C2H2 (with an empirical formula of CH) O C4H10 (with an emoirical formula of C2H5) O C6H12 (with an empirical formula of CH2) O C15H6 (with an empirical formula of C5H2)

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QUESTION 27
A hydrocarbon (a compound containing only carbon and hydrogen) is analyzed using a combustion analysis. If a 2.55 g sample of the hydrocarbon
produced 8.00 g of carbon dioxide and 3.28 g water, what is a possible formula of this hydrocarbon? The molar mass of carbon dioxide (CO2) is 44.01
g-mol-1, and the molar mass of water (H20) is 18.02 g-mol-1.
O C2H2 (with an empirical formula of CH)
O C4H10 (with an emoirical formula of C2H5)
O CGH12 (with an empirical formula of CH2)
O C15H6 (with an empirical formula of C5H2)
QUESTION 28
For a 8.73 g sample of ethanol (shown in the figure), what is the percent composition by mass of carbon? The molar mass of ethanol is 46.08 g-mol-1.
H
H
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Transcribed Image Text:20 21 22 23 24 25 26 27 28 10 11 12 13 14 15 16 17 18 19 3 4. 7 58 59 60 61 47 48 49 50 51 520 53 54 55 56 57 38 39 40 41 42 43 44 45 46 35 36 37 67 68 69 70 QUESTION 27 A hydrocarbon (a compound containing only carbon and hydrogen) is analyzed using a combustion analysis. If a 2.55 g sample of the hydrocarbon produced 8.00 g of carbon dioxide and 3.28 g water, what is a possible formula of this hydrocarbon? The molar mass of carbon dioxide (CO2) is 44.01 g-mol-1, and the molar mass of water (H20) is 18.02 g-mol-1. O C2H2 (with an empirical formula of CH) O C4H10 (with an emoirical formula of C2H5) O CGH12 (with an empirical formula of CH2) O C15H6 (with an empirical formula of C5H2) QUESTION 28 For a 8.73 g sample of ethanol (shown in the figure), what is the percent composition by mass of carbon? The molar mass of ethanol is 46.08 g-mol-1. H H Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers Cl
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