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Please watch your units and use the most time effective, yet clear and consise method possible....

Please watch your units and use the most time effective, yet clear and consise method possible. Thank You!

EMPIRICAL/MOLECULAR FORMULA PROBLEM:

A characteristic fruity odor is due to butyl butyrate, a compound containing carbon, hydrogen, and oxygen.

Combustion of 2.78 mg of butyl butyrate produces 6.80 mg of CO2 and 2.78 mg of H2O.

If the substance has a molar mass 144 g/mole, what is its EMPIRICAL and MOLECULAR FORMULA? Show your work!

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