Question
In: Chemistry
Parts of modern instruments and their uses The following instruments ( mass spectrometry , potentiometer, polarimetet)
Parts of modern instruments and their uses The following
instruments ( mass spectrometry , potentiometer, polarimetet)
Solutions
queen_honey_blossom answered 9 months agoRelated Solutions
Consider the following statements as they apply to mass spectrometry. Decide if each is true or...
Consider the following statements as they apply to mass
spectrometry. Decide if each is true or false.
True False It is possible to get a mass spectrum of
large analytes like polymers and biomolecules because of the
development of ionization techniques such as MALDI and FAB.
True False For a particular analyte, the mass spectrum
obtained is highly dependent upon the ionization technique
used.
True False Though a gas chromatograph (GC) is a common
way to introduce a sample into a mass spectrometer,...
What are the essential features of the following type of ionization mode used in mass spectrometry?...
What are the essential features of the following type of
ionization mode used in mass spectrometry? Include whether it is a
hard or soft process and what are the main benefits and/or
limitations.
a) Ramped or “Smart Fragmentation” (i mostly need this
one)
b) chemical ionization
c) Atmospheric pressure chemical ionization
Mass spectrometry is a very accurate means of determining the mass and sequence of peptides, however...
Mass spectrometry is a very accurate means of
determining the mass and sequence of peptides, however some
inconsistencies occur due to incomplete reactions and similar
structures.
a. Name two amino acids whose mass can’t be
distinguished by mass spectrometry.
b. If a bond between Ser and Val is not hydrolyzed, what
amino acid could be mistakenly identified?
c. If a bond between two Gly residues is not hydrolyzed,
what amino acid could be mistakenly identified?
Why is tandem mass spectrometry more useful in analysis of peptides and proteins?
Why is tandem mass spectrometry more useful in analysis of
peptides and proteins?
Gas Chromatography- Mass Spectrometry If the chromatographic elution peaks in the sample are far apart and...
Gas Chromatography- Mass Spectrometry
If the chromatographic elution peaks in the sample are far apart
and analysis takes a relatively lon time, should you increase or
decrease the column temperature program to improve analysis time?
Explain your reasoning.
1.Mass spectrometry is described as: A. Molecules enter the high pressure chamber and are bombarded with...
1.Mass spectrometry is described as:
A. Molecules enter the high pressure chamber and are bombarded
with energy.
B. Molecules enter the ionization chamber and push electrons
to higher energy states.
C. Molecules enter the ionization chamber and undergo
collisions to form ions.
D. None of the above
What do you think ?
1.What are the key operating features of the following types of mass spec instruments and what...
1.What are the key operating features of the following types of
mass spec instruments and what are the advantages and benefits if
any associated with each type. (Include quadrupole, triple
quadrupole mass spec, ion trap and time of flight) 2. Briefly
describe what is Maldi
1.What are the key operating features of the following types of mass spec instruments and what...
1.What are the key operating features of the following types of
mass spec instruments and what are the advantages and benefits if
any associated with each type. (Include quadrupole, triple
quadrupole mass spec, ion trap and time of flight) 2. Briefly
describe what is Maldi
What are the important concepts to know and remember about Mass Spectrometry and Infrared Spectroscopy? how...
What are the important concepts to know and remember about Mass
Spectrometry and Infrared Spectroscopy? how does the formula work
with a given example?
wo natural gas samples are going to be analyzed for its helium content by mass spectrometry....
wo natural gas samples are going to be analyzed for its helium
content by mass spectrometry.
The following signals were recorded for helium standards:
He (vol%)
0.000
0.061
0.123
0.485
0.978
1.913
Signal (mV)
7.8
47.3
95.8
387.1
812.8
1547.1
a) Construct a calibration curve using EXCEL.
b) Find the equation for the straight line and state the
R2
c) The unknown natural gas samples gave signals of 234.9 mV and
925.7 mV. Find the respective concentrations of helium in...
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