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April 23, 2014

Homework Help: chemistry

Posted by Sazon on Wednesday, September 7, 2011 at 12:54am.

Combustion analysis, Empirical and Molecular formulas, help!?


When 2.686 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 9.224 grams of CO2 and 1.511 grams of H2O were produced.

In a separate experiment, the molar mass of the compound was found to be 128.2 g/mol. Determine the empirical formula and the molecular formula of the hydrocarbon.

Enter the elements in the order presented in the qustion.

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