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I want to use combustion analysis to determine the unknown formula of a hydrocarbon that is...

I want to use combustion analysis to determine the unknown formula of a hydrocarbon that is composed of only hydrogen and carbon. For 56.0 g of the hydrocarbon, I find that 189.2 g CO2 and 77.5 g H2O are produced.

a. Write the reaction equation for the combustion of an unknown hydrocarbon CXHY.

b. Using the information provided, determine the empirical formula of the hydrocarbon.

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