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16. A hydrocarbon with a molecular weight of 100 Da (and expected molecular ion at 100...
16. A hydrocarbon with a molecular weight of 100 Da (and expected molecular ion at 100 m 2) was analyzed by mass...
16. A hydrocarbon with a molecular weight of 100 Da (and expected molecular ion at 100 m 2) was analyzed by mass spectrometry and gave the spectra shown below. Based on the MS spectrum and considering possible fragmentation of the hydrocarbon, which of the molecules provided corresponds to this spectrum? 100- m/z = 57 Da Relative Intensity m/z = 85 Da Expected molecular ion (not observed) 10 20 30 40 tillo el origen los 50 60 70 80 90 100...
1. An unknown hydrocarbon has a molecular ion peak at m/z 84 with a relative intensity...
1. An unknown hydrocarbon has a molecular ion peak at m/z 84 with a relative intensity of 31.3. The M+1 peak has a relative intensity of 2.06 and the M+2 peak has a relative intensity of 0.08. What is the possible molecular formula of the compound?
Circle the molecular ion peak for the following MS spectrum and the m/z value for the...
Circle the molecular ion peak for the following MS spectrum and
the m/z value for the molecular ion is _____________
4. Circle the molecular ion peak for the following MS spectrum and the m/z value for the molecular ion is 42 pt) 100 80- 60- ? 40- 20- 10 20 30 40 50 m z
Name: Starting with the mass spectrum of n-heptane What is the molecular ion? What fragment is...
Name: Starting with the mass spectrum of n-heptane What is the molecular ion? What fragment is lost to generate the ion with m/z =71? What cation does the peak at m/z = 43 represent? What group does the spacing between each set of ions represent? Why is the peak at (M-15), corresponding to loss of -CH3 so small? Draw the structure of 2,4-dimethylpentane What is the structure of the ion responsible for m/z = 85? Relative Intensity What is the...
15. The mass spectrum of a compound appears below. The molecular ion, M+1, and M+2 peaks...
15. The mass spectrum of a compound appears below. The molecular ion, M+1, and M+2 peaks have intensities of 100, 6.8, and 31.8 respectively. Use the information provided to determine the formula of the compound 100 MS-NW-5495 80 60 40 20 шшшl 110 10 20 30 40 50 60 70 80 90 100 m/z Relative Intensity
15. The mass spectrum of a compound appears below. The molecular ion, M+1, and M+2 peaks have intensities of 100, 6.8, and 31.8 respectively....
100 Relative intensity m/z (amu) out of 23 Part 1 (0.5 point) El See Period What is the molecular formula for the h...
100 Relative intensity m/z (amu) out of 23 Part 1 (0.5 point) El See Period What is the molecular formula for the hydrocarbon in the mass spectrum above? x x Part 2 (0.5 point) If we have 10 moles of the hydrocarbon (from the mass spectrum) above, how many moles of water will be produced assuming the reaction goes to completion? The reaction occurs only in the presence of the hydrocarbon and excess oxygen.
Propose three reasonable molecular formulas for a molecular ion at m/z = 176, (show calculations; 3...
Propose three reasonable molecular formulas for a molecular ion at m/z = 176, (show calculations; 3 pts) Propose two reasonable structures for a hydrocarbon having an exact mass of 122.1096 that forms 1-ethyl-1-methylcyclohexane upon hydrogenation with excess H2 and Pd-C. (2 pts) 3. 4. A low resolution mass spectrum of a neurotransmitter gave a molecular ion at m/z s 153. Three possible formulas for this molecular ion are Coth/N,O2. Cat,NO, and C,HnN,O. A high resolution mass spectrum provided a exact...
a) Describe the difference between the base peak and the parent ion (or molecular ion) peak....
a) Describe the difference between the base peak and the parent
ion (or molecular ion) peak.
b) Identify the base peak and the parent ion (or molecular ion)
peak (if any) according to the mass spectrum.
c) Identify the mass fragments which correspond to m/z = 77,
105, 111, and 139.
d) Identify and give explanations for the magnitude (or
intensity) of the peaks at m/z = 113, 141, and 218.
Mass Spectrum ofp-C hlorobenzophenone 105 100 80 139 CI...
Assign a base peak, molecular ion peak (with m/z) and identify the structure. 100- MS-N-0025 Relative...
Assign a base peak, molecular ion peak (with m/z) and identify
the structure.
100- MS-N-0025 Relative Intensity 10 2030 70 80 90 m /z rse Cha O a OOTW
Problem 1 Elemental Analysis: C, 64.82: H, 13.60; o, 21.58 Mass of molecular ion: 74 100...
Problem 1 Elemental Analysis: C, 64.82: H, 13.60; o, 21.58 Mass of molecular ion: 74 100 70 80 10 20 04 60 70 m/z Analysis problem 1 Empirical formula Molecular Formula Hydrogen Deficiency Index: SPECTRA ANALYSIS TELLS ME.. MS IR NMR Structure AND explanation: Problem 2 Elemental Analysis: C, 73.63; H, 12.30, 0, 1401 Mass of molecular ion: 114 100 10 20 40 0 0 70 80 9 100 110 m/z 3H Copyrigh19 ai 2.0 t.0 PPM 0. Analysis problem...
16. A hydrocarbon with a molecular weight of 100 Da (and expected molecular ion at 100 m 2) was analyzed by mass spectrometry and gave the spectra shown below. Based on the MS spectrum and considering possible fragmentation of the hydrocarbon, which of the molecules provided corresponds to this spectrum? 100- m/z = 57 Da Relative Intensity m/z = 85 Da Expected molecular ion (not observed) 10 20 30 40 tillo el origen los 50 60 70 80 90 100...
1. An unknown hydrocarbon has a molecular ion peak at m/z 84 with a relative intensity of 31.3. The M+1 peak has a relative intensity of 2.06 and the M+2 peak has a relative intensity of 0.08. What is the possible molecular formula of the compound?
Circle the molecular ion peak for the following MS spectrum and
the m/z value for the molecular ion is _____________
4. Circle the molecular ion peak for the following MS spectrum and the m/z value for the molecular ion is 42 pt) 100 80- 60- ? 40- 20- 10 20 30 40 50 m z
Name: Starting with the mass spectrum of n-heptane What is the molecular ion? What fragment is lost to generate the ion with m/z =71? What cation does the peak at m/z = 43 represent? What group does the spacing between each set of ions represent? Why is the peak at (M-15), corresponding to loss of -CH3 so small? Draw the structure of 2,4-dimethylpentane What is the structure of the ion responsible for m/z = 85? Relative Intensity What is the...
15. The mass spectrum of a compound appears below. The molecular ion, M+1, and M+2 peaks have intensities of 100, 6.8, and 31.8 respectively. Use the information provided to determine the formula of the compound 100 MS-NW-5495 80 60 40 20 шшшl 110 10 20 30 40 50 60 70 80 90 100 m/z Relative Intensity
15. The mass spectrum of a compound appears below. The molecular ion, M+1, and M+2 peaks have intensities of 100, 6.8, and 31.8 respectively....
100 Relative intensity m/z (amu) out of 23 Part 1 (0.5 point) El See Period What is the molecular formula for the hydrocarbon in the mass spectrum above? x x Part 2 (0.5 point) If we have 10 moles of the hydrocarbon (from the mass spectrum) above, how many moles of water will be produced assuming the reaction goes to completion? The reaction occurs only in the presence of the hydrocarbon and excess oxygen.
Propose three reasonable molecular formulas for a molecular ion at m/z = 176, (show calculations; 3 pts) Propose two reasonable structures for a hydrocarbon having an exact mass of 122.1096 that forms 1-ethyl-1-methylcyclohexane upon hydrogenation with excess H2 and Pd-C. (2 pts) 3. 4. A low resolution mass spectrum of a neurotransmitter gave a molecular ion at m/z s 153. Three possible formulas for this molecular ion are Coth/N,O2. Cat,NO, and C,HnN,O. A high resolution mass spectrum provided a exact...
a) Describe the difference between the base peak and the parent
ion (or molecular ion) peak.
b) Identify the base peak and the parent ion (or molecular ion)
peak (if any) according to the mass spectrum.
c) Identify the mass fragments which correspond to m/z = 77,
105, 111, and 139.
d) Identify and give explanations for the magnitude (or
intensity) of the peaks at m/z = 113, 141, and 218.
Mass Spectrum ofp-C hlorobenzophenone 105 100 80 139 CI...
Assign a base peak, molecular ion peak (with m/z) and identify
the structure.
100- MS-N-0025 Relative Intensity 10 2030 70 80 90 m /z rse Cha O a OOTW
Problem 1 Elemental Analysis: C, 64.82: H, 13.60; o, 21.58 Mass of molecular ion: 74 100 70 80 10 20 04 60 70 m/z Analysis problem 1 Empirical formula Molecular Formula Hydrogen Deficiency Index: SPECTRA ANALYSIS TELLS ME.. MS IR NMR Structure AND explanation: Problem 2 Elemental Analysis: C, 73.63; H, 12.30, 0, 1401 Mass of molecular ion: 114 100 10 20 40 0 0 70 80 9 100 110 m/z 3H Copyrigh19 ai 2.0 t.0 PPM 0. Analysis problem...
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