m/z 246 m/z 148 m/z 113 m/z 288 m/z 203

Q: The molecular weight for His is 155.1546. At what mass would you observe the positive ion peak for…

A: Electrospray ionization (ESI) is a method for producing ions for mass spectrometry by delivering a…

Q: The El mass spectrum of an unknown compound is given below. Interpret the spectrum and identify the…

A: Mass spectrometer is one of the important analytical technique used for the structural determination…

Q: What is the signal Spliting pattern , integration value , chemical shift for the NMR spectrum…

A: From H-NMR spectrum, we can observe the following: A singlet (1 peak) for 1 H at 9.88 indicates the…

Q: Upon mixing CFP-a-p34 with GFP-a-p34 and 3-p34, the fluorescence of CFP drops from 100,000 to…

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Q: NMR nuclei observed: C13 Solvent: DMSO NMR field strength: 15 MHz 160 140 120 100 80 60 40 20 PPM ®…

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Q: Q4.2 Sensitivity If 13C data were collected at this field using a protein concentration of 500 µM…

A: Answer. Sensitivity of 13C NMR is way much more than 1H NMR so, higher concentration of protein…

Q: EH140 3. 2.8 2.6 2.4 2.2 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 PPM

A: The question is based on the concept of Spectroscopy. we have to analyse the spectra provided and…

Q: m/z 77 m/z 130 m/z 228 m/z 256 m2 185

A: Mass spectrum is the technique used in analytical chemistry for the separation of ions based on the…

Q: . Consider the mass spectrum of 2-bromopentane, which exhibits a molecular ion peak at m/z = 150…

A: A question based on mass spectrum that is to be accomplished.

Q: Mass Spectrometry (not shown): [M] = 158 m/z -1 Infrared Spectroscopy (not shown): 2970, 2940, 2880,…

A: Spectroscopy methods are used to determine the structure of chemical compound

Q: Propose a structure for C4H10 The 1H NMR data is as follows [splitting, chemical shift…

A: First we calculate  the DBE. and identify  tha fragment from the given  data.

Q: The three compounds shown below are structural isomers of each other. Ma each compound with its…

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Q: A is 86. In the mass spectrum of A, four signals were observed at m/z 86, 71, 43 and 29. The…

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Q: Which spectrum would be predicted from ? (Assume coupling constants are equal. Use chemical shift…

A: We are having a organic compound structure we have to predict the spectrum which correctly can be…

Q: C4H,Br. infrared signal: 2975 cm1 3H, d 3H, t 2H pentet 1H, sextet C3H1„Br, . infrared signal: 2970…

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Q: 2-Methylpentane (C6H14) has the mass spectrum shown. Which peak repre- sents M†? Which is the base…

A: The most intensive peak in the mass spectrum is called the Base peak. It represents the most…

Q: A compound with molecularformula C,H,,0 gives the following IR spectrum. 100 1650 1720 4000 36bo…

A: Given is IR spectra.

Q: The molecular ion region of the spectrum of biphenyl. M1 is observed at m/z 154 and the intensity of…

A: M.+ peak in the mass spectra of any compound is the molecular ion peak and gives the molecular mass…

Q: 12. The mass spectrum of 2,2-dimethylpropane shows only a very weak molecular ion peak at m/z = 72.…

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Q: A carbon signal measured in a 300MHz spectrometer with an observing frequency of 75.47MHz is found…

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Q: Q. Write fragments in mass spectroscopy of CH3- O-CH2-CH2-CI , m/z 14, 15, 27 ,28 ,45 ,63 ,77 ,94.…

A: The mass fragments of the CH3-O-CH2-CH2-Cl are: (a) 14    (b) 15    (c) 27    (d) 28    (e) 45…

Q: What is the base beak in an electron impact mass spectrum? Name one property of the positive…

A: Mass spectrometry is a technique for analysis of a substance in which molecules of substance ionised…

Q: 'H MHz (in CDC13) 11 10 8 7 6 5 4 1 EN

A: For identification of the compound, we have to identify the posiible structures from the given…

Q: Find the Structural Formula in 'H-NMR Spectra of C3H;Br. Compute the IHD, integration, identify the…

A: The structural formula is C7H7Br The H1-NMR spectra is-                          As integration of…

Q: Analyze the mass spectrum of diisopropyl ether.

A: Draw the structure of the molecular ion of diisopropyl ether.

Q: The intensities of peaks at 69 m/z, 70 m/z, and 71 m/z are 1.2, 31.2, and 1.7, respectively. How…

A: A mass spectrum is an important tool for the determination of the mass of a compound. A mass…

Q: Decide what H and C atoms in your final product should fit the reported chemical shifts and answer…

A: Nuclear magnetic resonance spectroscopy (NMR) is the most vital tool in organic chemisrty. It is…

Q: What is the fragment for the base peak at m/z = 29? Deduce and explain the halogen present in the…

A: This problem can be solved from the concept of mass spectra analysis.

Q: Calculate the degree of unsaturation of compound E. What information can be obtained from the…

A: Dear Subscriber! You have posted multiple questions. As per our policy we answered only first…

Q: What is the expected coupling pattern for the boxed proton? CI H bpp tq Sextet O Singlet ttq

A: Coupling is due to magnetic field of nearest nabouring protons . Coupling pattern  = n+1  Where…

Q: "H-NMR of the product signal Chem. Shift Mult. J (in Hz) (ppm) b HO, a d e d. e ll 10.5 10.0 9.5 9.0…

A: The proton nuclear magnetic resonance spectroscopy is an analytical tool that is employed to…

Q: CDCI3 240 QE-300 220 200 180 160 140 120 100 80 60 40 20 12 11 10 6. 4 3 2

A: The question is based on the concept of Spectroscopy. we have to analyse the spectra provided and…

Q: The mass spectrum of compound B is shown below. 100 180 80 181 77 В 182 20 104 25 50 75 100 125 150…

A: In the mass spectrum the peak with m/z at higher value indicates the molecular ion peak this appears…

Q: 100 139 MS-NW-3158 80 111 [M]* 20 [M+2]* 25 50 75 100 125 150 m/z Relative Intensity 유

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Q: Which of the following IR frequencies would be expected for p-aminobenzoic acid? Select all that…

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Q: 100 400 90 80 70 30 60 50 40 30 30 20 10 0 00 20 30 40 88 88 88 88

A: NMR spectroscopy helps us to find out the structure of the unknown organic compound formed in the…

Q: What would be the multiplicity associated with # 2 in 1H-NMR?

A: Multiplicity associated with #2 in 1HNMR = ?

Q: Choose the most intense mass spectrum signal for 12 m/z 29 m/z 41 m/z 57 m/z А D

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Q: 20 1. The EI-MS of methylcyclohexane is shown below. Locate the following information in it: CH3 (a)…

A: ESI-Mass analysis:

Q: a. A proton with a chemical shift of 600HZ relative to TMS in a 600MHZ NMR appears at 0.5 ppm in a…

A: Note: Since you have posted multiple independent questions in the same request, we will solve the…

Q: Answer the questions based on the following figure. Draw the most likely ion fragment for the…

A: In the mass spectrum, there are various ways of cleavage of the compound to get different m/z values…

Q: ¹H NMR assignment Chemical shift (ppm) Integration assignment Explanation of multiplicity

A: We are given the 1H-NMR spectrum of the unknown and we have to find the possible structure of the…

Q: Draw the most likely ion fragment for the signals at m/z 111, 139, and 156.

A: The most likely ion fragment for the signals at m/z 111, 139, and 156 has to be drawn.

Q: mean in 13C NMR and the

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Q: When we perform Bradford Assay to measure protein concentration, the spectrophotometer is set  595…

A: Bradford assay: It is used to measure the protein concentration.  Coomassie Brilliant blue-250 dye…

Q: A proton signal measured in a 90MHz spectrometer shows a doublet with peaks at 5.65 and 5.72 ppm.…

A: Ans

Q: Which fragment correlates to the base peak of the following mass spectrum? 100 10 20 30 40 50 60 70…

A: Base peak: In mass spectrum, the peak with high relative intensity is known as base peak.

Q: What is the fragment for the base peak at m/z = 29? Deduce and explain the halogen present in the…

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