Answered: Q2. Briefly explain the dusting method…

Science

Chemistry

Q2. Briefly explain the dusting method in fingerprint analysis?

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

ChapterL3: Carbon (13c) Nmr Spectroscopy

Section: Chapter Questions

Problem 13CTQ

See similar textbooks

Related questions

Q: what does having a DBE(double bond equivalent) of 6 indicate when working with spectroscopy graphs?

A: DBE or double bond equivalent or LU or level of unsaturation is the number of unsaturations present…

Q: Dyes in unknown mixture: Yellow Calculations for Rf values: 1. Blue no.2 2. Red no.3 3. Yellow no.5…

A: The components in the unknown mixture can be identified by comparing the Rf values and colors of its…

Q: absorbance of a sample is 0.521, what is its concentration?

Q: Which of the following fragments in a mass spectrometry would be accelerated through the analyzer…

A: The structural aspect of a molecule can be well analysed by the use of mass spectrometry. By seeing…

Q: Explain how the DEPT spectrum can aid structure determination

A: DEPT is known as Distortionless Enhancement by Polarization Transfer is a modern NMR technique used…

Q: Write a short note on FAB'"mass spectrometry.

A: mass spectrometry

Q: b) CsH.Br 80 60 40 20 TRANSMITTANCE (%) 主

A: Different types of spectroscopy can be used to identify the structure of unknown compound. Some…

Q: Can a low-resolution mass spectrometer distinguish between C2H5+ and CHO+? a. Can a high-resolution…

A: The high-resolution mass spectrometry and the low-resolution mass spectrometry are the two important…

Q: how would the Rf values change if eluted with hexanes using an alumina TLC plate?

A: In chromatography, a stationary phase is a solid, or a liquid supported on a solid (e.g. silica) and…

Q: What is the Hrxn in kJ? what is the Srxn in kJ?

Q: Why were the absorbance measurements recorded at lambda max (504 nm)? Question 1 options:…

A: Most of the dyes are sensitive at 504 nm so at this wave length is fixed to measure the…

Q: Draw a figure to illustrate a SHAPE-probing experiment.

A: the shape is shown below.

Q: What is the molecular mass observed for Man9(GlcNAc)2 if it has a mass spectrometry ionization that…

A: In mass spectrometry, mass is represented as a bar graph, where each bar denotes the corresponding…

Q: What is difference between mass spectroscopy and mass spectrometry?

A: Spectroscopy refers to the study of how radiated energy and matter interact. The energy is absorbed…

Q: What

A: The ratio of the absorbance is used to determine the purity of the DNA . If the ratio is around 1.8…

Q: As part of an investigation on Pb in biological ecosystems, some grasses that grew along the road…

Q: Shich will have no effect on an Rf value in TCL?

A: We have to tell which option is correct from given choices of options

Q: Better resolution" means... a) detected peaks are separated from each other as much as possible and…

A: Resolution is the ability to separate two peaks in chromatography. The higher the resolution, more…

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: Which kind of solvents are suitable for experiments involving spectroscopic analyses? (A…

A: In Spectroscopy, solvents play crucial role. In this technique ,solvents have to be 100 % pure,and…

Q: Why does a sample get wet during sublimation? With drying the NMR sample with Na2SO4.

A: Na2so4 exist as hydrate of sodium sulphate and it is highly hygroscopic in nature. That is why when…

Q: The figure below is a mass spectrum in ESI- MS. Calculate the MW of the protein analyzed from the…

A: The figure is given as the mass spectrum in ESI-MS. The MW of the protein has to be calculted.

Q: Give an advantage and a disadvantage of the spectra obtained from an electron impact (El) mass…

A: Answer :

Q: You did not wipe their fingerprints from the sides of the cuvette before making the absorbance…

A: If we do not wipe the fingerprint from the sides of the cuvette before making the absorbance…

Q: Draw structures for the two fragment ions of highest mass from the following molecule. ball & stick…

A: The mass spectrometry helps us to find the rough structure of the unknown compound from the m/z…

Q: please help me analyze the mass spectrometry

A: Please find your solution below : Mass spectrometry is a technique which is used to measure mass to…

Q: Match the Spectroscopy method to the information it provides. Infrared (IR) Spectroscopy [ Choose ]…

A: We have to match the spectroscopy with that of which they depends on . The Infrared spectroscopy are…

Q: Q.1. Explain why, even though the average atomic mass of silver is 107.9amu, no peak at 108 amu is…

A: Mass spectroscopy is an analytical technique used to determine the mass of compounds. This technique…

Q: What mass range or molecular mass range can be detected using GC-MS?

A: Mass spectrometry (MS) is an incredibly versatile technique, so it can be used on a wide range of…

Q: Please refer to the table below Name Chemical Formula Molecular Weight (CRC Handbook of Chemistry…

A: An unknown sample is run on a mass spectrometer and produced a mass spectrum with molecular ion, M+…

Q: Why do polar solvents obliterate the fine spectral structures in an absorption band?

A: Polar solvents obliterate the fine spectral structures in an absorption band.

Q: 1. What is mass spectrometry? What is the advantage of this technique in chemical analysis?

Q: Choose the structure below that must have given rise to the FTIR scan pictured below. Note that this…

A: IR Spectroscopy is used to identify the functional groups present in an organic compound.

Q: Explain what can be determined from the following mass spectrum. M* = 123

A: From the mass spectrum we can determine the structure of unknown compound via molecular weight. It…

Q: How can IR spectroscopy be used to determine when the attached reaction is complete?

A: In the given reaction alkene is undergoing hydration to give alcohol. IR Spectroscopy is an…

Q: Why KBr used in IR spectroscopic sample preparation? Please shortly answer at your own words.…

Q: How might you used mass spectrometry to distinguish between heptan-3-one and heptan-4-one? Justify…

A: Solution- by used mass spectrometry to distinguish between heptan-3-one and heptan-4-one-

Q: similarities and differences of the IR Reports. Include peaks and functional groups/ fingerprint…

A: By observing the given IR spectrum the following differences are identified: The broad peak at…

Q: Convert the 98% T to absorbance: а. О.008 b. 0.08 с. 0.021 d. 0.21

A: Transmittance = 98%

Q: a) How does mass spectrometry identify organic compounds?

Q: Draw structures for the two fragment ions of highest mass from the following molecule. ball & stick…

A: The given molecule is:

Q: a) Calculate the rule of 13. b) Determine the molecular formula of the compound using the mass…

A: a). The rule of 13 means a base formula is made and the molecular mass is divided by 13. The number…

Q: Question 8. How can you use absorption spectra of dye standards to identify the dye(s) present in a…

A: Each and every dye has specific absorption maxima (λ max ). It is nothing but the wavelength at…

Q: Chemistry Name the compound using mass spec, NMR, and IR.

A: From the mass spectra, it is given that the mass of the unknown compound is 245.32 According to the…

Q: 31. How many percentage of the radical cation peak of (M +1) will be observed approximately when…

A: The relative natural abundance of M+1 that is 13C is 1.1% required the relative natural abundance of…

Q: Which of the following fragments produced in a mass spectrometer will be accelerated through the…

A: Fragments produced in mass spectrometer: All the positively charged fragments of the molecule are…

Q: Why Use Benchtop NMR Spectrometers?

A: Benchtop NMR spectrometers are portable ones which can be kept on the benchtop. It is also cost…

Q: In mass spectrometry, there are patterns in the molecular ion region due to isotopic abundances.…

A: The atoms with same atomic number but different mass number is known as isotopes. In mass…

Concept explainers

UV Visible Spectroscopy

Spectroscopy refers to the absorption or emission of light or other radiations by matter. When a substance or chemical absorbs light or radiation, they reach an excited state followed by de-excitation or emission of the light or radiation forming distinct spectra. UV-visible spectroscopy or ultraviolet-visible refers to the absorption and emission in the ultraviolet and visible regions of the electromagnetic spectrum.

Question

Q2. Briefly explain the dusting method in fingerprint analysis? Q3. Give the main disadvantage of using ninhydrin in fingerprint analysis?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Introduction Q 2

VIEW

Process

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

Chemistry a. Are there methods other than spectrophotometry to determine protein concentration? If there is, please provide an explanation of this method along with its advantages and disadvantages! b. Explain the principle of protein separation by electrophoresis method! c. Can protein electrophoresis method be used to characterize proteins? Please explain why!
When LC is coupled with mass spectrometry (MS), what are the advantages (compared to LC only) in terms of analyte identification and quantitation in the sample?
Both UV/Vis and IR spectrometers can be used for quantitative analysis of analytes. True False
How do you call the small peak usually found at the the left of the moelcular ion peak in a mass spectra? fragment peak relative abundance peak M+1 peak or isotope peak parent peak or molecular ion peak
Which statement is true? Statement 1: In Thin Layer Chromatography (TLC), the polar compounds will have a greater Rf value compared to that of non-polar compounds.Statement 2: The stationary phase in TLC is polar.
A technique called “GCMS” is often used instead of simple GC analysis. This technique entails passing a sample through a gas chromatography instrument and replacing the standard GC detector with a mass spectrometer (the “MS” part). What advantages do you think GCMS has over GC as well as simple MS?
Give at least two reasons for using very dilute solutions when doing fluorescence spectrometry
what steps taken after excision of the bands before analyzing by mass spectrometry?
Why does a sample get wet during sublimation? With drying the NMR sample with Na2SO4.
Which type of mass spectrometer ionization results in the greatest amount of fragmentation A.atmospheric pressure chemical ionization B.electrospray C.chemical ionization D.electron impact
From your results, which component had the highest Rf value and which had the lowest? Based on your answer from the previous question, what could be the reason behind some components having an Rf value higher than the others? Compare the qualities of the two components that rendered the highest and lowest Rf After performing the simulation, what do you think are the possible practical applications of chromatographic techniques that are relevant to your program NURSING?
1. What is mass spectrometry? What is the advantage of this technique in chemical analysis? 2. List down the major components of MS. Briefly describe how this component generates mass spectrum. 3. What is the information that can be obtained from molecular ion and fragment ions in Mass Spectrum? 4. Describe in detail why only ions and radical cations are appearing in Mass Spectrum? 5. What is the major difference between EI and CI? What is their advantage in the chemical analysis?