(a)
Interpretation:
The ratio of
Concept introduction:
The ratio can be calculated by using the abundance of other isotopes relative to the most
(b)
Interpretation:
The ratio of
Concept introduction:
The ratio can be calculated by using the abundance of other isotopes relative to the most abundant isotope.
(c)
Interpretation:
The ratio of
Concept introduction:
The ratio can be calculated by using the abundance of other isotopes relative to the most abundant isotope.
![Check Mark](/static/check-mark.png)
Trending nowThis is a popular solution!
![Blurred answer](/static/blurred-answer.jpg)
Chapter 20 Solutions
Principles of Instrumental Analysis, 6th Edition
- Explain the concept of Alkyl Halides and the M + 2 Peak ?arrow_forwardIf two signals differ by 1.5 ppm in a 300 MHz spectrometer, by how much do they differ in a 500 MHz spectrometer?arrow_forwardIdentify each signal showed in the spectra for both C4H8O2 and C8H8O. Determine the multiplicity and integrity for each signal.arrow_forward
- (a) What would be the chemical shift of a peak that is observed at 655.2 Hz from the reference tetramethylsilane (TMS) recorded using a 90 MHz spectrometer ? (b) At what frequency would the chemical shift of chloroform (CHCl3, δ = 7.28 ppm) occur relative to TMS on a spectrum recorded on a 300 MHz spectrometer? (c) At what frequency and chemical shift would the signal for chloroform occur when using a 1 GHz NMR spectrometer?arrow_forwardC8H8O produces an IR spectrum with 3063, 1686, 1646 cm signals. HNMR is a singlet at 2.6ppm (3H), and multiplet at 7.5 (5H). What is the productarrow_forwardThe intensities of peaks at 69 m/z, 70 m/z, and 71 m/z are 1.2, 31.2, and 1.7, respectively. How many carbons does the compound have? 100 MS-NU-1334 80 40 20 10 15 25 30 35 40 45 50 55 60 65 70 m/z Relative Intensity 20arrow_forward
- Calculate the resolution required to resolve the following peaks; i) CH3N+ (MW = 28.0187) and N2+ (MW = 28.0061) ii) C2H4+ (MW = 28.0313) and CO+ (MW = 27.9949) iii) C3H7N3+ (MW = 85.0641) and C5H9O+ (MW = 85.0653) iv) 116Sn+ (At W = 115.90219) and 232Th2+ (At W = 232.03800)arrow_forwardSuppose you are analyzing mercury ions (Hg2+) in drinking water samples with atomic absorption spectroscopy. If the Hg2+ signal varies by a matrix of sample, which of the following should be used as a standard for calibration? Either cations or anions can be used if they are different from Hg2+, 0 H20 Any anions can be used if they are different from Hg2+ Any cations can be used if they are different from Hg?". Hg2+arrow_forwardIf two signals differ by 90 Hz in a 300 MHz spectrometer, by how much do they differ in a 500 MHzspectrometer?arrow_forward
- What would be the multiplicity associated with peak 2?arrow_forwardA low-resolution mass spectrum of the neurotransmitter dopamine gave a molecular ion at m/z = 153. Two possible molecular formulas for this molecular ion are C8H11NO2 and C7H11N3O. A high-resolution mass spectrum provided an exact mass at 153.0680. Which of the possible molecular formulas is the correct one?arrow_forwardCalculate m/z of the 2M++ and M+ peaks for C2H8arrow_forward
- Principles of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
![Text book image](https://www.bartleby.com/isbn_cover_images/9781305577213/9781305577213_smallCoverImage.gif)