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Spectroscopy
Page 3
Questions (279)
An unknown was prepared with the concentration of 0.000520 M. A Beer's Law plot was prepared using the absorbance values from
1 answer
asked by
anchal
454 views
When will a scientist observe redshift in the spectrum of a distant space object?(1 point)
Responses when the object is
3 answers
asked by
hi
119 views
Comment on the suitability of running a infared spectrum under these conditions
A KBr pellet is prepared with a compound that
1 answer
asked by
MELISSA
372 views
comment on suitability of running infared spectrum under the following conditions:
A neat spectrum of liquid with a boiling point
2 answers
asked by
MELISSA
659 views
when will a scientist observe redshift in the spectrum of a distant space object
3 answers
asked by
izzy
128 views
What must a molecule possess to be able to absorb radiation in the infra-red region?
1 answer
asked by
CHRIS
366 views
When will a scientist observe redshift in the spectrum of a distant space object?(1 point)
Responses when the object is
3 answers
asked by
billy bob joe
61 views
When will a scientist observe redshift in the spectrum of a distant space object? (1 point)
when the object is moving away from
3 answers
asked anonymously
59 views
When will a scientist observe redshift in the spectrum of a distant space object? (1 point)
when the object is moving away from
3 answers
asked anonymously
112 views
3. An unknown element produces a spectral line of 425nm.
A. Calculate the energy of the emitted photon in joules. B. What is the
1 answer
asked by
suszan
952 views
how to determine equivalent hyfrogens in hnmr?
1 answer
asked by
tim
257 views
When will a scientist observe redshift in the spectrum of a distant space object?(1 point)
Responses when the object is
3 answers
asked anonymously
49 views
Determine the structure of the compound C7H14O based on its 13C NMR spectrum.
2 answers
asked by
jennel
707 views
Determine the structure of the compound by using the IR and 1H NMR of a spectra that has the molecular formula:C4H7ClO2
1 answer
asked by
jennel
632 views
Redshift is observed when:
a. a distant luminous object travels rapidly away from an observer b. a luminous object travels
3 answers
asked by
M
46 views
When will a scientist observe redshift in the spectrum of a distant space object?(1 point) Responses when the object is in the
3 answers
asked anonymously
36 views
When will a scientist observe redshift in the spectrum of a distant space object?(1 point) Responses when the object is in the
3 answers
asked anonymously
42 views
When will a scientist observe redshift in the spectrum of a distant space object?(1 point)
Responses when the object is in the
3 answers
asked anonymously
36 views
name and give the formula for two cations that you think could be anailzed quantitatively by visible spectroscopy
1 answer
asked by
Anonymous
320 views
Why do you draw a linear graph of absorbance versus concentration even though your experimental values deviated slightly from a
3 answers
asked by
Jerome
1,093 views
When will a scientist observe redshift in the spectrum of a distant space object?(1 point)
Responses when the object is in the
3 answers
asked anonymously
100 views
We observe an absorption line of Oxygen at 504 nm in Star A and at 508 nm in Star B. We know in the lab
this line has a
3 answers
asked by
Mark
46 views
If light from a hot star passes through a thin cool interstellar cloud that is moving toward you, the resulting spectrum can be
3 answers
asked by
Mark
13 views
determing concentration by spectroscopy lab discussion?
1 answer
asked by
iqra
309 views
Hello, can someone please help me? I'm stuck on a question:
I'm doing an analysis of the absorbance of FeSCN2+ at it's max
3 answers
asked by
mary
757 views
Hello, can someone please help me? I'm stuck on a question:
I'm doing an analysis of the absorbance of FeSCN2+ at it's max
1 answer
asked by
mary
436 views
What pattern do you observe in the spectra of the galaxies?
7 answers
asked anonymously
37 views
All Lyman emission lines are transitions from the excited state to _____ state.
2 answers
asked by
Stevie
480 views
Difference between Atomic spectrum and emission spectrum. First give me the clear cut definition of both and then the
10 answers
asked by
Akashdeep Singh
604 views
Which statement about the black absorption lines is true
A) all elements have identical patterns, and number of lines B) each
3 answers
asked anonymously
42 views
What type of motion would have to occur to move or displace the fixed color lines produced by a gas like helium or hydrogen
1 answer
asked by
Paige
424 views
We are doing Aldol condensation, and are asked to find the concentration of the UV-Vis Spectrum. However, I am not sure how to
1 answer
asked by
Markus
339 views
3h
2h 1h 4 3 2 1 0 ppm C2H6O I tried to duplicate the spectrum for this compound. I'm guessing its ethanol but I don't know how
1 answer
asked by
Andy
398 views
Why do geminal protons that are adjacent to a stereogenic center give rise to two separate signals?
1 answer
asked by
CAMCAM
266 views
The absorbance of a 6.3x10^-5M solution of an iron complex was measured to be 0.328 at the optimum wavelength. A second solution
2 answers
asked by
L**
482 views
Do different line sources emit different line spectra?
1 answer
asked by
Austin
305 views
how do i calculate a concentration ratio of oxidised to reduced cytochrome c Fe2+ to Fe3+
given at 25 C and pH7 E(mV) as 100 and
1 answer
asked by
lu
927 views
Imaging from the Earth's surface causes a problem when even on a clear night the atmosphere emits a faint glow, equivalent to a
3 answers
asked by
Shahid Rehman
33 views
how could you use infrared spectroscopy to detect the presence of ethanol in an oxygenated fuel?
I think it is either a C-O
4 answers
asked by
Chelsea
596 views
Absorbance spectroscopy relies on the fact that specific molecules can only absorb certain wavelengths. Explain how this could
1 answer
asked by
Ashley
389 views
A student needs to run an experiment to determine the amount of substance in the solution. As more of the substance is
1 answer
asked by
Gweedo8
461 views
what do the pattern of lines in a star's absorption spectrum represent?
1 answer
asked by
nhi
1,013 views
how could i use 13Cn.m.r spectroscopy to distinguish between the ketone and the alcohol?
1 answer
asked by
Nat
336 views
Where would one expect to see a peak corresponding to a carbonyl group
A. 1350-1500 B. 1625-1800 C. 1700-1825 D. 1775-1900 E.
3 answers
asked by
nilee
516 views
How many peaks would be expected in the 1H NMR spectrum for mesitylene?
A. 2 B. 6 C. 3 D. 12 E. 9
1 answer
asked by
nilee
421 views
1. How could you distinguish between cyclohexane and cyclohexene using IR only?
3 answers
asked by
ladi
1,422 views
explain why a thioester
absorbs at a lower frequency than an ester in IR spectroscopy. Use inductive and resonance arguments in
1 answer
asked by
ladi
320 views
If a sample tube was smudged with a fingerprint when inserted into a spectrometer, what affect would this have on the value of A
4 answers
asked by
Mischa
583 views
In word, Describe how you would calculate the concentration of green pigment. Assume that your 1/100 solution had an Abosrbance
1 answer
asked by
Vivian
488 views
on a domestic gas cooker the temperture in the hottest part of the flame is about 2200k.if salty eater is spilled in the flame
2 answers
asked by
amy21
493 views
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