When 4.353 grams of a hydrocarbon, C, Hy, were burned in a combustion analysis apparatus, 12.74 grams of CO, and 7.825 grams of H,0 were produced. In a separate experiment, the molar mass of the compound was found to be 30.07 g/mol. Determine the empirical formula and the molecular formula of the hydrocarbon. Enter the elements in the order presented in the question. empirical formula = molecular formula

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
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**Combustion Analysis Experiment**

The image describes a combustion analysis apparatus used to identify the chemical makeup of a hydrocarbon.

**Apparatus Description:**
- The diagram shows a furnace containing a sample of hydrocarbon. Oxygen (`O₂`) is added to the furnace to facilitate combustion.
- Post-combustion, the gases pass through an `H₂O absorber` and a `CO₂ absorber`.

**Experiment Details:**
- A hydrocarbon, represented as `CₓHᵧ`, has a mass of **4.353 grams**.
- Combustion of the sample yields **12.74 grams** of `CO₂` and **7.825 grams** of `H₂O`.

**Objective:**
- Determine the empirical and molecular formulas of the hydrocarbon.
- The molar mass of the compound obtained from a separate experiment is **30.07 g/mol**.

**User Input Required:**
- Enter the empirical formula.
- Enter the molecular formula.

**Action:**
- The user is prompted to submit an answer after entering the formulas. The system allows up to 5 attempts.

**Note:**
- To answer this question, utilize the references provided for important values.

**Support:**
- Technical support available from Cengage Learning for any issues encountered.

This educational task involves applying principles of stoichiometry and gas absorption in analytical chemistry to derive the chemical identity of the hydrocarbon sample.
Transcribed Image Text:**Combustion Analysis Experiment** The image describes a combustion analysis apparatus used to identify the chemical makeup of a hydrocarbon. **Apparatus Description:** - The diagram shows a furnace containing a sample of hydrocarbon. Oxygen (`O₂`) is added to the furnace to facilitate combustion. - Post-combustion, the gases pass through an `H₂O absorber` and a `CO₂ absorber`. **Experiment Details:** - A hydrocarbon, represented as `CₓHᵧ`, has a mass of **4.353 grams**. - Combustion of the sample yields **12.74 grams** of `CO₂` and **7.825 grams** of `H₂O`. **Objective:** - Determine the empirical and molecular formulas of the hydrocarbon. - The molar mass of the compound obtained from a separate experiment is **30.07 g/mol**. **User Input Required:** - Enter the empirical formula. - Enter the molecular formula. **Action:** - The user is prompted to submit an answer after entering the formulas. The system allows up to 5 attempts. **Note:** - To answer this question, utilize the references provided for important values. **Support:** - Technical support available from Cengage Learning for any issues encountered. This educational task involves applying principles of stoichiometry and gas absorption in analytical chemistry to derive the chemical identity of the hydrocarbon sample.
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