Could we have used Mass Spectrometry after the GC analysis (GC-MS) to identify which peak on the GC was which isomer? Why or why not?
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Could we have used Mass Spectrometry after the GC analysis (GC-MS) to identify which peak on...
1. if you were to see a peak in your GC-MS sample with a retention time of 8.00 min, how would the polarity of that compound compare to the polarity of limonene? Explain. 2. what is the purpose of adding the anhydrous sodium sulfate to GC-MS vial and filtering it? what might happen during the GC-MS analysis if we didn’t perform these steps?
c) Using your answers to question 5 and 6a, what percent of the
mixture obtained in reaction 1 is the ortho isomer?
d) What percent of the mixture obtained in reaction 1 is the
meta isomer?
e) What percent of the mixture obtained in reaction 1 is the
para isomer?
f) Could we have used Mass Spectrometry after the GC analysis
(GC-MS) to identify which peak on the GC was which isomer? Why or
why not?
g) Could we have...
Pyrene was analyzed using GC-MS at the selected ion mode. The calibration curve of peak area (GC-MS response) vs. concentration is shown below along with the regression output. A blank sample was analyzed seven times, giving a mean peak area of 125 and standard deviation of 15. A check standard at 0.5 ppm was also measured seven times, giving a standard deviation of 300. The raw data, Excel's printouts of linear regression along with the line plot are attached. (a)...
What is the base peak ion of mass spectrometry analysis of pentamide, pictured below? NH2 H NH2 Phy H OH NH2 OH NH2
NEED HELP WITH B) C) D) E) F) and G) that apply to the
spectra below.
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5. Using the GC mentioned in question 4 and the values listed on
the chromatogram for the height and width (at half height) of each
peak, calculate the percent composition for each product (A, B and
C). Be sure to show your work.
Area of peak A = 125 x 8 =
1000mm2
Area of peak...
The technique of mass spectrometry CANNOT Be used in the analysis of very large molecules like proteins Differentiate the different isotopes of the elements in a sample Differentiate enantiomers Be used in conjunction with an HPLC Be used for elemental analysis of a sample
Explain briefly how gas chromatography and mass spectrometry can be used to identify and quantitavely measure the components of an unk sample.
In Mass Spectrometry (MS) the molar mass of compounds can be determined. The so-called "molecular ion" corresponds to the molecular mass when Electron Impact Mass Spectrometry (EIMS, one of several common MS techniques) is used. It is important to realize, though, that the mass detected by MS depends on the isotopes present in the molecule. The questions below try illustrate the impact of isotope distribution in a molecule. What is the molar mass of the compound shown below? What is...
on the GC-MS Spectrum i have to do this.
here is the reaction
On the GC-MS spectra, what is the key piece of information that illustrates that you most likely made your desired product? Be specific. Answer in one sentence. 9. 10. One of the most frequently made fragments has a m/z 121. In box 1, draw a picture of this fragment. In box stable. Two hints to help you with Box 2: 1) Every atom in Box 2 MUST...
how do I fill this out?
Gas Chromatography Mass Spectrometry (GC-MS) Data Interpretation Section T Sam T llam T2pm Sam R 11am GC reten- tian time (min) Functional group(s) based on IR bond absorptions Parent radical cation m/z Molecular Degrees formula unsat uration Compound structure and IUPAC name Bolling point "C) carefully draw each fragment structure with the appropriate formal charge. You need only show one resonance form. 57 a cleavage) 43 (a-cleavage) 1.94 aldehyde or ketone CHO I 72...