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Spectroscopy
Page 5
Questions (279)
Why would it be better to use lighter colored lights (like yellow) be used in a spectroscopy experiment, rather than a green
3 answers
asked by
Marlene
584 views
if the wavelength of the first line in the balmer series in a hydrogen spectrum is 6863A .calculate the wavelength of the line
2 answers
asked by
Anonymous
604 views
A solution of 4-methyl-3-penten-2-one in ethanol shows an absorbance of 0.52 at 236 nm in a cell with a 1-cm light path. Its
2 answers
asked by
Ryan
581 views
determine the wavelength of the line in the emission spectrum produced by an electron transition He+ from ni= 4 to nf= 2.
2 answers
asked by
james
572 views
I have no idea What to do. What does it mean by 'draw what you think the visible range spectrum of this dye would look like.' To
4 answers
asked by
Kim
566 views
The absorbance of a protein solution measured in a 1.0 cm cuvette at 278 nm was 1.145. The protein content of that solution,
2 answers
asked by
Anonymous
558 views
From the fringe pattern of an empty Ir cell, the following wavenumbers were found for a seies of consecutive fringes: 3011.11
4 answers
asked by
Sakura
542 views
Does anyone have the spectra for sulfur? In class we did this using a flame test, where we put the sulfur in a flame over a
2 answers
asked by
Maddie
580 views
An unknown was prepared with the concentration of 0.000630 M. A Beer's Law plot was prepared using the absorbance values from
7 answers
asked by
Anonymous
582 views
1. Many types of spectrophotometers produce graphs containing a base line with peaks. How are the peaks seen on the graphs
2 answers
asked by
Morgan
525 views
If you use the lmax during the calibration plot (Beer's plot) and then change to some other wavelength for the measurement of
2 answers
asked by
Kelsey
517 views
For the emission spectrum of Be3+, calculate the lowest wavenumber νˉ (in inverse meters) of light produced by electron
7 answers
asked by
Anonymous
508 views
What is the spectra/spectrum (?) of the following gases?
-helium -hydrogen neon -nitrogen I'm not understanding this chapter
5 answers
asked by
lola
525 views
Can anyone tell me why a hydrogen atom has so many spectral lines even though it has only one electron? Also how would I explain
1 answer
asked by
Bean
530 views
If you use the lmax during the calibration plot (Beer's plot) and then change to some other wavelength for the measurement of
2 answers
asked by
Kelsey
529 views
How do astronomers use spectroscope??
2 answers
asked by
Tina
485 views
Calculate the frequency of light associated with the emission from n=5 to n=4 in the hydrogen atom.
I got -7.41 x10^13 Hz, but
2 answers
asked by
Sanaya
491 views
what other experiments or techniques can be used in replace of infrared spectroscopy
2 answers
asked by
Yoo
523 views
The infrared spectrum of CH3CH2NH2 shows two absorptions not shown by bromoethane. Identify the bonds responsible for these
1 answer
asked by
Lyn
491 views
Determine the energy and n(i) for the spectral line at 121.6 nm (orange). Hint: R(H)=2.18x10^-18 J, c=3.0x10^8, and 1x10^9 nm -
2 answers
asked by
Anonymous
468 views
Hey;
I'm currently in a kinetics class and I am trying to do a prelab for a lab that we haven't learned the material for yet and
3 answers
asked by
Tracy
508 views
The dye molecule 7-aminocoumarin has an extinction coefficient of 2800M-1cm-1 at 432nm. An aqueous sample of 7-aminocoumarin is
2 answers
asked by
Jaden
479 views
Why must the spectrometer be aligned each time a grating is replaced?
2 answers
asked by
grace
468 views
How would one be able to identify the lambda max of Cr(III) at a concentration less than 70ppm from a graph? I couldn't post the
1 answer
asked by
Sandy
481 views
This question refers to spectroscopy.
So why are certain colors used in this experiment? For example, why would a yellow light be
2 answers
asked by
Sammy
486 views
In an IR spectrum at wavelength = 1454cm-1 its where a CH2 group is present but then when it come to writing it down do I write
1 answer
asked by
help
455 views
The red line in the Helium spectrum is longer than the red line in the hydrogen
spectrum. What does that tell us about the
1 answer
asked by
help
481 views
Cobalt and nickel can be simultaneously determined by formation of their coloured complexes with 8-quinolinol in solution. Molar
3 answers
asked by
FilthyF
440 views
I was doing a spectroscopy problem, and on the NMR spectrum a peak at around 4.4 with 2 H says "exchanges with D2O". What does
1 answer
asked by
lindsay
464 views
A spectrometer uses a grating with
11600 lines/cm. Find the angle at which red light, 632.3 nm, has the first-order bright band.
1 answer
asked by
Leslie
449 views
Does water and methanol absorb light in the UV-Vis region?
1 answer
asked by
Alan
433 views
At l=530 nm:aCuSO4=7.544L/mol-cm aKMnO4= 3.645 L/mol-cm
At l=800nm: aCuSO4=2.908L/mol-cm aKMnO4= 5.412L/mol-cm you use a celleith
1 answer
asked by
Macy
444 views
you want to determine the amount of chlorophyll(Molecular weight=893.51g/mol)in a 25ml marine sample.before analysis by UV
1 answer
asked by
ussy
445 views
how do I plot absorbance vs concentration and transmittance %T vs concentration on the same graph??
1 answer
asked by
Vivian
466 views
Blue shift is observed, when
1 answer
asked anonymously
18 views
Use the spectrum readings from the sun (upper) and a star (lower) to answer the question.
An illustration shows the spectrum
1 answer
asked by
Lettuce?
38 views
What evidence do the positions of the peaks and dips in its spectrum provide about an object?(1 point)
Responses elemental
1 answer
asked anonymously
76 views
Cosmological redshift
[ Select ] the [ Select ] of light.
1 answer
asked anonymously
16 views
What evidence do the positions of the peaks and dips in its spectrum provide about an object?(1 point)
Responses temperature
1 answer
asked anonymously
31 views
What evidence do the positions of the peaks and dips in its spectrum provide about an object?(1 point)
Responses temperature
1 answer
asked anonymously
36 views
What evidence do the positions of the peaks and dips in its spectrum provide about an object? (1 point)
O temperature O expansion
1 answer
asked anonymously
72 views
What evidence do the positions of the peaks and dips in its spectrum provide about an object?(1 point)
Responses elemental
1 answer
asked by
my life sucks
75 views
What evidence do the positions of the peaks and dips in its spectrum provide about an object?(1 point)
Responses motion motion
1 answer
asked by
HI!
25 views
What evidence do the positions of the peaks and dips in its spectrum provide about an object?(1 point) Responses elemental
1 answer
asked anonymously
26 views
Use the spectrum readings from the sun (upper) and a star (lower) to answer the question. Which inference can be made from the
1 answer
asked anonymously
23 views
What evidence do the positions of the peaks and dips in its spectrum provide about an object?(1 point)
Responses elemental
1 answer
asked anonymously
23 views
How can you measure band-gap by UV-Vis
Spectroscopy?
1 answer
asked anonymously
20 views
what is the use of uv spectroscopy in semiconductor
1 answer
asked anonymously
18 views
What determines the colors of the spectral emission lines produced by a gas in a discharge tube?
•A. type of gas B. amount of
1 answer
asked by
Jl
28 views
What determines the colors of the spectral emission line produced by a gas in a discharge tube
1 answer
asked anonymously
26 views
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