Question: A 9.780-g gaseous mixture contains ethane (C 2 H 6 ) and propane (C 3 H 8 ). Complete combustion to form carbon dioxide and

A 9.780-g gaseous mixture contains ethane (C₂H₆) and propane (C₃H₈). Complete combustion to form carbon dioxide and water requires 1.120 moles of oxygen gas. Calculate the mass percent of ethane in the original mixture.

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