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Show the fragmentation pattern of the following. 1. 3-Phenyl-2-propenal (C9H80) with MW = 132.16 51 77...
Draw dibenzalacetone structure with fragmentation evidence 1. M/Z of 235, 234, 233, 157, 131, 115, 103, 77, 51 2. the %...
Draw dibenzalacetone structure with fragmentation evidence 1. M/Z of 235, 234, 233, 157, 131, 115, 103, 77, 51 2. the % intensity 3. Fragment ion structure
5) The electrospray mass spectrum of a pure protein is shown below. What is the MW...
5) The electrospray mass spectrum of a pure protein is shown below. What is the MW of the mass and charge of the ion associated with the peak at m/z = 3372.6? Show enough work so that we know how you obtained your answer. (5 pts) 2854.5 3091.8 Relative abundance 3372.6 3709.5 M/Z mass of the ion with m/z of 3372.6 = (b) State the charge (Z) of the 4 major peaks in the mass spectrum. (3 pts) Charge of...
(c). Cyclic alcohols may undergo fragmentation by at least three different pathways. Based on the following...
(c). Cyclic alcohols may undergo fragmentation by at least three different pathways. Based on the following mass spectrum, show THREE (3) fragmentation pathways for cyclohexanol. 57 100 80- OH M.W. = 100 60- 82 Relative Abundance 40- 20 lilia M (100) 99 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 B5 90 95 100 m/ (10 marks)
2. Show fragmentation process in R’CH2CH2CH2COR by Mclafferty rearrangement. Give the possible fragments along with the...
2. Show fragmentation process in R’CH2CH2CH2COR by Mclafferty rearrangement. Give the possible fragments along with the m/z values for the following compounds: (a) n-pentane and (b) 1-butanol. 3. Discuss the effect of electronegativity and hydrogen bonding on the chemical shift of a proton with the help of examples. Give the spin-spin splitting pattern of C6H5CH2OCH2CH3 and C6H5COOCH3.
1. Consider the Mass Spectrum below to answer the following questions: MS-NU-S495 Relative Intensity 0- 10...
1. Consider the Mass Spectrum below to answer the following questions: MS-NU-S495 Relative Intensity 0- 10 prote 20 30 40 t 50 to 60 70 m/z 80 90 100 110 a. (1 point) What is the m/z of the molecular ion peak: b. (1 point) What is the m/z value of the base peak: c. (2 point) Explain why do we observe the peak at m/z = 114 d. (2 points) The molecular formula of this compound is C.HSX. Identify...
Predict the molecular ion peak pattern (EI spectrum - low resolution) for the following species (show...
Predict the molecular ion peak pattern (EI spectrum - low
resolution) for the following species (show the line pattern with
relative abundances, masses, and [M]+/[M+2]+, etc.
designations).
60 10 m/z 3. Predict the molecular ion peak pattern (El spectrum - low resolution) for the following species (show the line pattern with relative abundances, masses, and [M]*[M+2]*, etc. designations). ii. CIBr iv. CaH&SO4 ii. CaH Br2 CSH11CI i.
2. Draw the structure of the cation responsible for the base peak (m/z=58) in the mass...
2. Draw the structure of the cation responsible for the base
peak (m/z=58) in the mass spectrum of 3-aminopentane shown
below:
3. Below is given the mass spectrum of a simple alkane. What is
the chemical formula of the alkane? What is the name of the alkane?
Explain how you determined the exact structure of the alkane from
the observed fragments.
4. Below is a mass spectrum of an ester. Identify the ester.
Consider that the dominant fragmentation pathway involves...
2. Match the electron impact (El) mass spectrum with the correct structure from the choices below....
2. Match the electron impact (El) mass spectrum with the correct structure from the choices below. of the fragments in the El spectra of the following molecules (write the correct letter in the upper left-hand corner of the spectra). Draw the structure of the indicated fragments (*) С В OH H *(43) *(71) *(43) 100 HS--1 100- -N-113 во- 80- 60- 60- 40- 40- 20- 20- m/z m/z 3. Predict the molecular ion peak pattern (El spectrum low resolution) for...
Angle 2: 30 23) What is the relative intensity? 24) Where on your interference pattern are...
Angle 2: 30 23) What is the relative intensity? 24) Where on your interference pattern are your two arrows located? Does this explain the intensity? How does the intensity compare to that measured for your first angle? Angle 3: 50 25) What is the relative intensity? 26) Where on your interference pattern are your two arrows located? Does this explain the intensity? Wavelength: 380 nm Spacing between slits: 1200 nm Angle: 30.0 Maxima: 0.0° (k = 0) Minima: 9.1°(k =...
rb of 1 mw al 93 18 2 127 211 eal pie 20, 20, 77 H...
rb of 1 mw al 93 18 2 127 211 eal pie 20, 20, 77 H 0 0 2 212 119 2 QQ ot M e rd xad 9 m pp to pptt
5) The electrospray mass spectrum of a pure protein is shown below. What is the MW of the mass and charge of the ion associated with the peak at m/z = 3372.6? Show enough work so that we know how you obtained your answer. (5 pts) 2854.5 3091.8 Relative abundance 3372.6 3709.5 M/Z mass of the ion with m/z of 3372.6 = (b) State the charge (Z) of the 4 major peaks in the mass spectrum. (3 pts) Charge of...
(c). Cyclic alcohols may undergo fragmentation by at least three different pathways. Based on the following mass spectrum, show THREE (3) fragmentation pathways for cyclohexanol. 57 100 80- OH M.W. = 100 60- 82 Relative Abundance 40- 20 lilia M (100) 99 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 B5 90 95 100 m/ (10 marks)
1. Consider the Mass Spectrum below to answer the following questions: MS-NU-S495 Relative Intensity 0- 10 prote 20 30 40 t 50 to 60 70 m/z 80 90 100 110 a. (1 point) What is the m/z of the molecular ion peak: b. (1 point) What is the m/z value of the base peak: c. (2 point) Explain why do we observe the peak at m/z = 114 d. (2 points) The molecular formula of this compound is C.HSX. Identify...
Predict the molecular ion peak pattern (EI spectrum - low
resolution) for the following species (show the line pattern with
relative abundances, masses, and [M]+/[M+2]+, etc.
designations).
60 10 m/z 3. Predict the molecular ion peak pattern (El spectrum - low resolution) for the following species (show the line pattern with relative abundances, masses, and [M]*[M+2]*, etc. designations). ii. CIBr iv. CaH&SO4 ii. CaH Br2 CSH11CI i.
2. Draw the structure of the cation responsible for the base
peak (m/z=58) in the mass spectrum of 3-aminopentane shown
below:
3. Below is given the mass spectrum of a simple alkane. What is
the chemical formula of the alkane? What is the name of the alkane?
Explain how you determined the exact structure of the alkane from
the observed fragments.
4. Below is a mass spectrum of an ester. Identify the ester.
Consider that the dominant fragmentation pathway involves...
2. Match the electron impact (El) mass spectrum with the correct structure from the choices below. of the fragments in the El spectra of the following molecules (write the correct letter in the upper left-hand corner of the spectra). Draw the structure of the indicated fragments (*) С В OH H *(43) *(71) *(43) 100 HS--1 100- -N-113 во- 80- 60- 60- 40- 40- 20- 20- m/z m/z 3. Predict the molecular ion peak pattern (El spectrum low resolution) for...
Angle 2: 30 23) What is the relative intensity? 24) Where on your interference pattern are your two arrows located? Does this explain the intensity? How does the intensity compare to that measured for your first angle? Angle 3: 50 25) What is the relative intensity? 26) Where on your interference pattern are your two arrows located? Does this explain the intensity? Wavelength: 380 nm Spacing between slits: 1200 nm Angle: 30.0 Maxima: 0.0° (k = 0) Minima: 9.1°(k =...
rb of 1 mw al 93 18 2 127 211 eal pie 20, 20, 77 H 0 0 2 212 119 2 QQ ot M e rd xad 9 m pp to pptt
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