100 43 29 57 71 Lilu. 15 10- 40 50 60 70 Relative Abundance 90- 80- 70- 60- 50 40 30 20- 0 10 20 30 O 2-methylheptane 80 2,4-dimethylpentane 90 100 m/z Select the compound that was used to generate the mass spectrum. O heptane hexane 100

Chemistry
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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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**Mass Spectrum Analysis**

The graph presented is a mass spectrum, which displays the relative abundance of ions detected based on their mass-to-charge ratio (m/z). The x-axis represents the m/z values, while the y-axis denotes the relative abundance of the detected ions.

**Key Peaks:**

- **m/z 15**: Small peak indicating an ion of relatively low mass.
- **m/z 29**: Moderate peak, possibly corresponding to a common fragment in hydrocarbons (e.g., ethyl group).
- **m/z 43**: The tallest peak, indicating it is the base peak, representing the most abundant ion in the spectrum.
- **m/z 57**: Another significant peak, possibly indicative of a larger hydrocarbon fragment.
- **m/z 71**: Notable peak, likely related to hydrocarbon fragmentation.
- **m/z 100**: Substantial peak, possibly indicating the molecular ion peak.

**Question:**

Select the compound that was used to generate the mass spectrum.

- ( ) heptane
- ( ) hexane
- ( ) 2-methylheptane
- ( ) 2,4-dimethylpentane
Transcribed Image Text:**Mass Spectrum Analysis** The graph presented is a mass spectrum, which displays the relative abundance of ions detected based on their mass-to-charge ratio (m/z). The x-axis represents the m/z values, while the y-axis denotes the relative abundance of the detected ions. **Key Peaks:** - **m/z 15**: Small peak indicating an ion of relatively low mass. - **m/z 29**: Moderate peak, possibly corresponding to a common fragment in hydrocarbons (e.g., ethyl group). - **m/z 43**: The tallest peak, indicating it is the base peak, representing the most abundant ion in the spectrum. - **m/z 57**: Another significant peak, possibly indicative of a larger hydrocarbon fragment. - **m/z 71**: Notable peak, likely related to hydrocarbon fragmentation. - **m/z 100**: Substantial peak, possibly indicating the molecular ion peak. **Question:** Select the compound that was used to generate the mass spectrum. - ( ) heptane - ( ) hexane - ( ) 2-methylheptane - ( ) 2,4-dimethylpentane
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