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Ug sample of a pure compound, containing only carbon and hydrogen, was combusted in a carbon-hydrogen combustion analyzer. The combustion produced 0.346g of water and 1.67g of carbon dioxide. a) Calculate the masses of carbon and hydrogen in the sample. b) Find the empirical formula of the compound.

Ug sample of a pure compound, containing only carbon and hydrogen, was combusted in a carbon-hydrogen combustion analyzer. The combustion produced 0.346g of water and 1.67g of carbon dioxide. a) Calculate the masses of carbon and hydrogen in the sample. b) Find the empirical formula of the compound.

Introductory Chemistry: A Foundation
Introductory Chemistry: A Foundation
9th Edition
ISBN:9781337399425
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Donald J. DeCoste
Chapter9: Chemical Quantities
Section: Chapter Questions
Problem 29QAP: When elemental carbon is burned in the open atmosphere, with plenty of oxygen gas present, the...
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1. A 0.500g sample of a pure compound, containing only carbon and hydrogen, was combusted in a carbon-hydrogen combustion analyzer. The combustion produced 0.346g of water and 1.67g of carbon dioxide. a) Calculate the masses of carbon and hydrogen in the sample. b) Find the empirical formula of the compound. 2. An 874mg sample of cortisol was subjected to carbon-hydrogen combustion analysis. 2.23g of carbon dioxide and 0.652g of water were produced. The molar mass of cortisol was found to be 362g/mol using a mass spectrometer. If cortisol contains carbon, hydrogen, and oxygen, determine its molecular formula.
Transcribed Image Text:1. A 0.500g sample of a pure compound, containing only carbon and hydrogen, was combusted in a carbon-hydrogen combustion analyzer. The combustion produced 0.346g of water and 1.67g of carbon dioxide. a) Calculate the masses of carbon and hydrogen in the sample. b) Find the empirical formula of the compound. 2. An 874mg sample of cortisol was subjected to carbon-hydrogen combustion analysis. 2.23g of carbon dioxide and 0.652g of water were produced. The molar mass of cortisol was found to be 362g/mol using a mass spectrometer. If cortisol contains carbon, hydrogen, and oxygen, determine its molecular formula.
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