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Spectroscopy
Page 4
Questions (279)
what does the calibration curve tell you about the spectrophotometer?
1 answer
asked by
stew
484 views
using a spectrophotometer what is the relationship between absorbance and the concentration of light absoring substance in a
3 answers
asked by
kim
459 views
Okay so I got the 39% from 5 runs on the spectrometer from volumetric flasks from 100-500 mL filled just sodium
5 answers
asked by
Suzy
461 views
I'm sorry but I still don't understand the concept of spectral analysis and the baseline. What does these words mean and what
1 answer
asked by
smiley
402 views
How can you tell what sort of gas is emitting light?
light is emitted by molecules...each molecule has a definite and unique
1 answer
asked by
rohan
514 views
At what wavelengths do Cr(III) ions absorb the maximum amounts of light?
Look at your color wheel. What color is Cr(III)? It will
1 answer
asked by
Anonymous
1,181 views
Discuss the principles of spectroscopy and its role in identifying chemical compounds.
1 answer
asked by
Kelvin
22 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
176 views
When will a scientist observe redshift in the spectrum of a distant space object?(1 point) Responses when the object is moving
1 answer
asked by
b33ft0ads
50 views
Calculate the wavelength, in nanometers, of the spectral line produced when an electron in a hydrogen atom undergoes the
3 answers
asked by
Anonymous
3,009 views
You are measuring the concentration of Fe2 in a sample by measuring the absorbance of its complex with ferroxine. Your sample,
3 answers
asked by
Shai
2,266 views
What is the frequency of the photons emitted by hydrogen atoms when they undergo transition from n=5 to n=3?
4 answers
asked by
Tiffany
1,926 views
Redshift and Blueshift Quick Check
2 of 32 of 3 Items Question When will a scientist observe redshift in the spectrum of a
1 answer
asked by
taylor swift
131 views
What is produced when light from a hot solid or dense gas passes through a less dense, cooler gas as photons of light move from
1 answer
asked by
Blue
39 views
What is produced when light from a hot solid or dense gas passes through a less dense, cooler gas as photons of light move from
1 answer
asked by
Blue
36 views
What is made when certain wavelengths of light, or colors, are given off by hot gases and can be thought of like a fingerprint
1 answer
asked by
Blue
27 views
When will a scientist observe redshift in the spectrum of a distant space object?(1 point)
1 answer
asked by
hi
44 views
When will a scientist observe redshift in the spectrum of a distant space object?(1 point)
Responses when the object is moving
1 answer
asked by
hi
119 views
Nuclear magnetic resonance spectroscopy can be used to study which type of atoms?
A. 16O B. 1H C. 2He
5 answers
asked by
Morgan
1,375 views
A lamp filament is made of tungsten. Why do we get a continuous spectrum rather than a tungsten line spectrum when light from an
2 answers
asked by
shelly
1,287 views
Which of the following statements is (are) true about a compound that has a molecular ion peak in its mass spectrum at mass 94,
2 answers
asked by
Tiffany
1,283 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
baddie💎
121 views
Calulate the wavelengths (in nm) of the visible lines in the line spectrum of hydrogen using the Rydberg equation (nf = 2; ni =
4 answers
asked by
Jim
1,105 views
In the spectrum of a specific element, there is a line with a wavelength of 656 nm. Use the Rydberg equation to calculate the
2 answers
asked by
Luke
1,110 views
a typical simple Infrared spectrophotometer which covers a wavelength range from 3 to 15um. Express it's range in
(1). Wave
2 answers
asked by
Evans
1,085 views
What type of spectrum is produced by a hydrogen gas when a high potential difference is applied to it?
a visible spectrum
3 answers
asked by
Bunny
1,133 views
What physical process is being observed using spectroscopic measurements in Beer's Law experiment?
2 answers
asked by
Candice
1,058 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
1,053 views
The X-axis for IR spectroscopy records ___ which is directly proportional to energy
4 answers
asked anonymously
16 views
Determine the structure of the compound by using the IR and 1H NMR of a spectra that has the molecular formula: C4H8O2
3 answers
asked by
jennel
954 views
A solution has a %T value of 75.4% at 600 nm. What is the absorbance of this solution at this wavelength?
2 answers
asked by
Gabby
880 views
The wavelength of first line of balmer series in hydrogen spectrum is 6563 A. Find the wavelength of first line of lyman series
2 answers
asked by
kat
880 views
a beam of electron 13.0 ev is used to bombard gaseous hydrogen. what series of wavelengths will be emitted?
3 answers
asked by
ameer mukhtar
860 views
In 6–8 sentences, write a summary of what you learned from this activity. Include
an explanation of what causes the spectral
1 answer
asked anonymously
56 views
Hydrogen exhibits several series of line spectra in different spectral regions. For example the Lyman series (nf = 1 in
2 answers
asked by
Andy
860 views
I am having some difficulties to identify compounds using their HNMR spectra. Can someone help me please.
Thank you. This is
1 answer
asked by
Ishani
836 views
What is the wavelength of the transition from n=4 to n=3 for Li2+? In what region of the spectrum does this emission occur? Li2+
2 answers
asked by
Lauren
853 views
A reflection grating is required which can resolve wavelengths as close as 0.002 nm in second order for the spectral region
1 answer
asked by
Sandhya
801 views
Why is it important to determine the wavelength of maximum absorption?
I assume we are talking spectroscopy here? When describing
1 answer
asked by
Janna
811 views
Five lines in the H atom spectrum have the following wavelengths in Ǻ: a). 1212.7, b). 4340.5, c).
4861.3 d). 6562.8 and e).
2 answers
asked by
Samantha
804 views
two tables containing electron impact mass spectra data are shown. select the molecule that corresponds to the appropriate
1 answer
asked by
maura
739 views
A line in the infrared region of the hydrogen spectrum has a wavelength of 1.875 micro meters. What is the transition
1 answer
asked by
Jimmy
763 views
1. A student uses 6M HCl solution contaminated with Al(NO3)3 to wash the nichrome wire in between recordings of emission spectra
2 answers
asked by
Sandy
693 views
Operating wavelength : 449 nm
Absorbance of solution 1 - Standard Dichromate-H2O : 0.560 a.u. Absorbance of solution 2 - Standard
1 answer
asked by
HELP
681 views
Scientists can determine what distant stars are made of, as well as their temperatures and velocities, by looking at
A absorption
1 answer
asked by
Anonymous
683 views
Why are different wavelengths used for red and blue dye in a spectrophotometer?
2 answers
asked by
Alex
652 views
Which of the following are excited in ultraviolet photoelectron spectroscopy?
A. Valence electrons B. Core electrons C. X-rays
2 answers
asked by
Morgan
659 views
If a star is receding (moving away from us) at a speed of 1.8% of the speed of light, at what wavelength would a spectral line
1 answer
asked by
Xenon
625 views
1. Why Beer's law is expressed in terms of absorbance instead of transmittance?
2. What is the significance of spectral scanning?
6 answers
asked by
smiley
604 views
Excited lithium atoms emit radiation at 670.8nm.
a. calculate the frequency of this radiation. b. calculate the energy (in eV) of
2 answers
asked by
Maria
602 views
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