The image shows a problem related to combustion analysis in chemistry. Here’s a transcription of the text:---A \(0.000937 \, \text{g}\) sample of an unknown compound composed only of carbon and hydrogen produced \(0.00274 \, \text{g}\) of \(\text{CO}_2\) and \(0.00168 \, \text{g}\) of \(\text{H}_2\text{O}\) in a combustion analysis. What is the empirical formula of the unknown compound?Provide your answer below:---Note: The text is accompanied by an input interface typically used for providing answers or calculations in educational platforms.There are no graphs or diagrams in the image.

0.000937 g sample of an unknown hydrocarbon Made up of carbon and hydrogen only produces 0.00274 g of CO2and 0.00168 g of H2O upon combustion .We have to find out the empirical formula of the unknown compound . Answer,The combustion reaction can be written as - CHn + O2 → CO2 + H2OMass of CO2 mCO2 = 0.00274 gMolar mass of CO2 = 44.01 g/molSo, number of moles of CO2 nCO2 = mCO2Molar massOr, nCO2 = 0.00274 g44.01 g mol-1Or, nCO2 = 6.226 × 10-5 mole In the chemical formula of CO2, 1 mole of carbon C is present . 1 mole CO2 → 1 mole CSo, number of moles of carbon nC = 6.226 × 10-5 moleSimilarly, mass of H2O mH2O = 0.00168 gMolar mass of H2O = 18.02 g/molSo, number of moles of H2O nH2O = mH2OMolar massOr, nH2O = 0.00168 g18.02 g mol-1Or, nH2O = 9.323 × 10-5 mole In the chemical formula of H2O, 2 moles of hydrogen H are present . 1 mole H2O → 2 moles HSo, number of moles of hydrogen nH = 2 × 9.323 × 10-5 moleOr, nH = 18.646 × 10-5 moleTaking ratio of nC and nH, we get - Moles of C nC : Moles of H nH 6.226 × 10-5 : 18.646 × 10-5 ⇒ 6.226 × 10-56.226 × 10-5 : 18.646 × 10-56.226 × 10-5 Divided by the smallest mole number ⇒ 1.00 : 2.99486 ≈ 3.00 So, the number of carbon C atom in the empirical formula = 1And, the number of hydrogen H atom in the empirical formula = 3Empirical formula : C1H3 or CH3∴ The empirical formula of the unknown compound is CH3 .

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A 0.000937 g sample of an unknown compound, composed only of carbon and hydrogen, produced 0.00274 g of CO₂ and 0.00168 g of H₂O in a combustion analysis. What is the empirical formula of the unknown compound? Provide your answer below: FEEDBACK MORE INSTRUCTION Activate Go to Settings to activate Windows 11:07 PM B

A 0.000937 g sample of an unknown compound, composed only of carbon and hydrogen, produced 0.00274 g of CO₂ and 0.00168 g of H₂O in a combustion analysis. What is the empirical formula of the unknown compound? Provide your answer below: FEEDBACK MORE INSTRUCTION Activate Go to Settings to activate Windows 11:07 PM B

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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