### Mass Spectrum Analysis1. **What do you suppose is the molecular weight of the molecule that gives the mass spectrum below?** ______ ![Mass Spectrum](#) The graph above represents a mass spectrum, where: - The x-axis is labeled "m/z" (mass divided by charge). - The y-axis is labeled "Rel Abund," meaning Relative Abundance. The spectrum displays several peaks at m/z values of 26, 27, 45, 55, and 72, with relative abundances of up to 100.2. **Provide three different molecular formulas (organic molecules, please) that are possible for a molecule with the molecular weight you have chosen. What are the degrees of unsaturation (SODAR) for each?** - Formula 1: ______________ Degrees of unsaturation: _____ - Formula 2: ______________ Degrees of unsaturation: _____ - Formula 3: ______________ Degrees of unsaturation: _____**Explanation of Graph and Terms:**- **Relative Abundance**: Indicates the intensity of the detected ions, with the tallest peak representing the most abundant ion.- **m/z (mass-to-charge ratio)**: This is a key measurement in mass spectrometry used to identify the characteristics of particles.**Instructions for Analysis:**- Identify the molecular weight based on the spectrum's most significant peak.- Propose three possible molecular formulas and calculate their degrees of unsaturation using the SODAR formula.

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1. What do you suppose is the molecular weight of the molecule that gives the mass spectrum below? Rel Abund 100 80- 60- 40- 20- 0- m/zo 10 20 26 Rel Abund Relative Abundance 27 30 45 40 50 55 m/z = mass divided by charge 60 72 70 80 90 100

1. What do you suppose is the molecular weight of the molecule that gives the mass spectrum below? Rel Abund 100 80- 60- 40- 20- 0- m/zo 10 20 26 Rel Abund Relative Abundance 27 30 45 40 50 55 m/z = mass divided by charge 60 72 70 80 90 100

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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Concept explainers

Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.

Question

### Mass Spectrum Analysis

1. **What do you suppose is the molecular weight of the molecule that gives the mass spectrum below?**
______

![Mass Spectrum](#)
The graph above represents a mass spectrum, where:

- The x-axis is labeled "m/z" (mass divided by charge).
- The y-axis is labeled "Rel Abund," meaning Relative Abundance.

The spectrum displays several peaks at m/z values of 26, 27, 45, 55, and 72, with relative abundances of up to 100.

2. **Provide three different molecular formulas (organic molecules, please) that are possible for a molecule with the molecular weight you have chosen. What are the degrees of unsaturation (SODAR) for each?**

- Formula 1: ______________
Degrees of unsaturation: _____

- Formula 2: ______________
Degrees of unsaturation: _____

- Formula 3: ______________
Degrees of unsaturation: _____

**Explanation of Graph and Terms:**

- **Relative Abundance**: Indicates the intensity of the detected ions, with the tallest peak representing the most abundant ion.
- **m/z (mass-to-charge ratio)**: This is a key measurement in mass spectrometry used to identify the characteristics of particles.

**Instructions for Analysis:**

- Identify the molecular weight based on the spectrum's most significant peak.
- Propose three possible molecular formulas and calculate their degrees of unsaturation using the SODAR formula.

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