Calculate the mass percentage of oxygen in the organic molecule whose line structure is shown below. Express your answer with three significant figures.

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**Problem Description:**

Calculate the mass percentage of oxygen in the organic molecule whose line structure is shown below. Express your answer with three significant figures.

**Molecule Structure:**

The image shows a line structure of an organic molecule. The structure consists of a linear chain with 13 carbon atoms. The chain has a double bond between the 9th and 10th carbons from the left. At the end of this chain, there is a carboxylic acid group (-COOH) attached, indicating the presence of two oxygen atoms in the structure.

**Solution Instructions:**

To solve this problem, follow these steps:

1. **Determine the Molecular Formula**: 
   - Count the number of carbon (C), hydrogen (H), and oxygen (O) atoms.
   - The line structure has:
     - 18 carbon atoms: C18
     - A double bond indicating less hydrogen:
     - 32 hydrogen atoms: H32
     - 2 oxygen atoms due to the -COOH group: O2

2. **Calculate the Molar Mass**:
   - Carbon (C): 12.01 g/mol
   - Hydrogen (H): 1.008 g/mol
   - Oxygen (O): 16.00 g/mol
   
   Molar mass calculation:
   - \(18 \times 12.01 \, \text{g/mol} \, (\text{C}) + 32 \times 1.008 \, \text{g/mol} \, (\text{H}) + 2 \times 16.00 \, \text{g/mol} \, (\text{O})\)

3. **Calculate the Mass Percentage of Oxygen**:
   - Total molar mass of oxygen: \(2 \times 16.00 \, \text{g/mol}\)
   - Mass percentage of oxygen: 
   \[
   \left( \frac{\text{Total mass of oxygen}}{\text{Total molar mass of the molecule}} \right) \times 100
   \]

4. **Present the Mass Percentage with Three Significant Figures**.

Provide the final mass percentage calculation in the answer box.
Transcribed Image Text:**Problem Description:** Calculate the mass percentage of oxygen in the organic molecule whose line structure is shown below. Express your answer with three significant figures. **Molecule Structure:** The image shows a line structure of an organic molecule. The structure consists of a linear chain with 13 carbon atoms. The chain has a double bond between the 9th and 10th carbons from the left. At the end of this chain, there is a carboxylic acid group (-COOH) attached, indicating the presence of two oxygen atoms in the structure. **Solution Instructions:** To solve this problem, follow these steps: 1. **Determine the Molecular Formula**: - Count the number of carbon (C), hydrogen (H), and oxygen (O) atoms. - The line structure has: - 18 carbon atoms: C18 - A double bond indicating less hydrogen: - 32 hydrogen atoms: H32 - 2 oxygen atoms due to the -COOH group: O2 2. **Calculate the Molar Mass**: - Carbon (C): 12.01 g/mol - Hydrogen (H): 1.008 g/mol - Oxygen (O): 16.00 g/mol Molar mass calculation: - \(18 \times 12.01 \, \text{g/mol} \, (\text{C}) + 32 \times 1.008 \, \text{g/mol} \, (\text{H}) + 2 \times 16.00 \, \text{g/mol} \, (\text{O})\) 3. **Calculate the Mass Percentage of Oxygen**: - Total molar mass of oxygen: \(2 \times 16.00 \, \text{g/mol}\) - Mass percentage of oxygen: \[ \left( \frac{\text{Total mass of oxygen}}{\text{Total molar mass of the molecule}} \right) \times 100 \] 4. **Present the Mass Percentage with Three Significant Figures**. Provide the final mass percentage calculation in the answer box.
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