Combustion Analysis of an Organic Compound to Determine the Percentages

question 112

Multiple Choice

Combustion analysis of an organic compound to determine the percentages of carbon, hydrogen, and oxygen in the compound depends on which of the following assumptions?

• A)The compound burns completely to form carbon dioxide and water.
• B)All the oxygen in the products comes from the added oxygen gas.
• C)The mass of the carbon dioxide produced equals the mass of the carbon in the sample.
• D)The moles of water produced equal the moles of hydrogen in the sample.
• E)The mass of oxygen in the sample is the difference between the mass of the sample and the sum of the masses of carbon dioxide and water produced.

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