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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/zó 10 Formula 2: 20 Formula 3: 26 3. What is the base peak?. 27 30 40 45 50 55 60 72 70 Rel Abund = Relative Abundance m/z = mass divided by charge 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: Degrees of unsaturation: Degrees of unsaturation: 80 90 100 What mass is lost from the molecular ion to get to the base peak?

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/zó 10 Formula 2: 20 Formula 3: 26 3. What is the base peak?. 27 30 40 45 50 55 60 72 70 Rel Abund = Relative Abundance m/z = mass divided by charge 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: Degrees of unsaturation: Degrees of unsaturation: 80 90 100 What mass is lost from the molecular ion to get to the base peak?

Organic Chemistry: A Guided Inquiry
Organic Chemistry: A Guided Inquiry
2nd Edition
ISBN:9780618974122
Author:Andrei Straumanis
Publisher:Andrei Straumanis
ChapterL2: Mass Spectrometry
Section: Chapter Questions
Problem 27CTQ
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**Mass Spectrometry Analysis Exercise** 1. **What do you suppose is the molecular weight of the molecule that gives the mass spectrum below?** _______ ![Mass Spectrum Graph] - **Graph Description:** - The x-axis represents m/z (mass-to-charge ratio). - The y-axis represents relative abundance (%). - Notable peaks at m/z values of 26, 27, 45, 55, and 72. - **Peak List:** - m/z = 27 - m/z = 26 - m/z = 45 - m/z = 55 - m/z = 72 (highest peak) 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: _____ 3. **What is the base peak?** _______ **What mass is lost from the molecular ion to get to the base peak?** _______ 4. **Draw a possible molecule for each formula.** - Based on Formula 1 - [Drawing Box] - Based on Formula 2 - [Drawing Box] - Based on Formula 3 - [Drawing Box] 5. **Which structure do you think is correct?** _______
Transcribed Image Text:**Mass Spectrometry Analysis Exercise** 1. **What do you suppose is the molecular weight of the molecule that gives the mass spectrum below?** _______ ![Mass Spectrum Graph] - **Graph Description:** - The x-axis represents m/z (mass-to-charge ratio). - The y-axis represents relative abundance (%). - Notable peaks at m/z values of 26, 27, 45, 55, and 72. - **Peak List:** - m/z = 27 - m/z = 26 - m/z = 45 - m/z = 55 - m/z = 72 (highest peak) 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: _____ 3. **What is the base peak?** _______ **What mass is lost from the molecular ion to get to the base peak?** _______ 4. **Draw a possible molecule for each formula.** - Based on Formula 1 - [Drawing Box] - Based on Formula 2 - [Drawing Box] - Based on Formula 3 - [Drawing Box] 5. **Which structure do you think is correct?** _______
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