Homework Answers
We know that number of spectral lines depend number of electrons because if there are more electrons in the atom possibility for going to excited state will be more.Andistance number of electron depend on atomic number.so we can say that neon has so many spectral lines than hydrogen .
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3.Compare the spectrum of hydrogen to the spectrum of neon.
Why do you think neon has...
3. A strange hypothetical atom has only 5 energy levels that its electrons can occupy (instead of...
Cosmology
6
3. A strange hypothetical atom has only 5 energy levels that its electrons can occupy (instead of an infinite number). Determine how many spectral lines will appear in its spectrum. Show how you arrive at your answer by drawing a sketch similar to Figure 7-4 (but with no energy levels beyond n-5). [Hint: electrons can "jump" from any level onto any other level.] [4 points; from Chapter 7] 4. A strange star with a surface temperature of 5,000...
a) A photograph of an absorption spectrum is mostly bright with black spectral lines. A photograph...
a) A photograph of an absorption spectrum is mostly bright with
black spectral lines. A
photograph of an emission spectrum is black with bright spectral
lines. Why are they different? Explain
in 4-6 sentences.
b) Electron are accelerated between parallel plates in a tube
containing hydrogen gas at
ambient temperature. The potential difference across the plates
is 12.9 V. What spectral lines will be visible in the emission
spectrum? Make an energy diagram to support your answer.
380 450 590...
A star emits light with a peak wavelength of 9,750 angstroms. What type of star is...
A star emits light with a peak wavelength of 9,750 angstroms. What type of star is this and what is its color? Major stellar spectral types and temperatures Type Color Temperature (K) Comment O Bluish 30,000-80,000 Spectrum with ionized helium and hydrogen but little else; short-lived and rare stars B Bluish 10,000-30,000 Spectrum with neutral helium, none ionized A Bluish 7,500-10,000Spectrum with no helium, strongest hydrogen, some magnesium and calcium F White 6,000-7,500 Spectrum with lonized calcium, magnesium, neutral atoms...
How does the energy possessed by an emitted photon compare to the difference in energy levels tha...
Answer all of these, please
How does the energy possessed by an emitted photon compare to the difference in energy levels that gave rise to the emission of the photon? When a tube containing hydrogen atoms is energized by pass- ing several thousand volts of electricity into the tube, the hy- drogen emits light that, when passed through a prism, resolves into the "bright line" spectrum shown in Fig. 11.10. Why do hydrogen atoms emit bright lines of specific wavelengths...
When you hold up a piece of white notebook paper in sunlight, what color does the...
When you hold up a piece of white notebook paper in sunlight, what color does the paper appear? Explain with reference to the thermal spectrum of the Sun A very hot star may have a temperature of 25.000 K. What is the peak wavelength of the spectrum of this star, and what kind of light is this? Does this very hot star emit light at wavelengths other than the peak wavelength? Explain with reference to its thermal spectrum What color...
1.explain why there are more lines in the hydrogen emission spectrum than in the absorption spectrum?...
1.explain why there are more lines in the hydrogen emission spectrum than in the absorption spectrum? 2. indicate asborption, from a lower energy level to a higher energy level. Then indicate emission for the same transition as through various pathways, which would then result in many more emission peaks than there was in the original absorption (transition).
The characteristic absorption spectra of two stars are shown. Indicated in each is a set of absor...
The characteristic absorption spectra of two stars are shown.
Indicated in each is a set of absorption lines due to interstellar
material between us and the stars. Using this information and the
spectral drawings shown below complete parts a - e of this
question.
a. The interstellar absorption lines appear more intense in the
spectrum of star A than star B. What does this mean in terms of the
number of absorbing atoms between the earth observer's line of
sight...
I was having trouble with some lab question on atomic emission spectra. Also answer the following...
I was having trouble with some lab question on atomic emission
spectra.
Also answer the following questions about your observations: Are the lines present in the hydrogen spectrum the same lines predicted by the Bohr model the atom? Which lines, if any, are missing? Why might there be lines missing? Compare the spectral lines from your unknown substance to the other spectra you observed. Based on these comparisons, what is the identity of the unknown substance? Are there any general...
Ch 27 HW (Part 2) The Hydrogen Spectrum « previous 5 of 19 next » SubmitMy...
Ch 27 HW (Part 2) The Hydrogen Spectrum « previous 5 of 19 next » SubmitMy AnswersGive Up Part B What is the wavelength of the line corresponding to n=5 in the Balmer series? Express your answer in nanometers to three significant figures. SubmitMy AnswersGive Up Part C What is the smallest wavelength λmin in the Balmer's series? Express your answer in nanometers to three significant figures. Hints SubmitMy AnswersGive Up Part D What is the largest wavelength λmax in...
What are the most prominent absorption lines you would expect to find in the spectrum of...
What are the most prominent absorption lines you would expect to find in the spectrum of a star with a surface temperature of (a) 35,000 K, (b) 2800 K, and (c) 5800 K (like the Sun?) Briefly describe why these stars have such different spectra even though they have essentially the same chemical composition.
Cosmology
6
3. A strange hypothetical atom has only 5 energy levels that its electrons can occupy (instead of an infinite number). Determine how many spectral lines will appear in its spectrum. Show how you arrive at your answer by drawing a sketch similar to Figure 7-4 (but with no energy levels beyond n-5). [Hint: electrons can "jump" from any level onto any other level.] [4 points; from Chapter 7] 4. A strange star with a surface temperature of 5,000...
a) A photograph of an absorption spectrum is mostly bright with
black spectral lines. A
photograph of an emission spectrum is black with bright spectral
lines. Why are they different? Explain
in 4-6 sentences.
b) Electron are accelerated between parallel plates in a tube
containing hydrogen gas at
ambient temperature. The potential difference across the plates
is 12.9 V. What spectral lines will be visible in the emission
spectrum? Make an energy diagram to support your answer.
380 450 590...
A star emits light with a peak wavelength of 9,750 angstroms. What type of star is this and what is its color? Major stellar spectral types and temperatures Type Color Temperature (K) Comment O Bluish 30,000-80,000 Spectrum with ionized helium and hydrogen but little else; short-lived and rare stars B Bluish 10,000-30,000 Spectrum with neutral helium, none ionized A Bluish 7,500-10,000Spectrum with no helium, strongest hydrogen, some magnesium and calcium F White 6,000-7,500 Spectrum with lonized calcium, magnesium, neutral atoms...
Answer all of these, please
How does the energy possessed by an emitted photon compare to the difference in energy levels that gave rise to the emission of the photon? When a tube containing hydrogen atoms is energized by pass- ing several thousand volts of electricity into the tube, the hy- drogen emits light that, when passed through a prism, resolves into the "bright line" spectrum shown in Fig. 11.10. Why do hydrogen atoms emit bright lines of specific wavelengths...
When you hold up a piece of white notebook paper in sunlight, what color does the paper appear? Explain with reference to the thermal spectrum of the Sun A very hot star may have a temperature of 25.000 K. What is the peak wavelength of the spectrum of this star, and what kind of light is this? Does this very hot star emit light at wavelengths other than the peak wavelength? Explain with reference to its thermal spectrum What color...
The characteristic absorption spectra of two stars are shown.
Indicated in each is a set of absorption lines due to interstellar
material between us and the stars. Using this information and the
spectral drawings shown below complete parts a - e of this
question.
a. The interstellar absorption lines appear more intense in the
spectrum of star A than star B. What does this mean in terms of the
number of absorbing atoms between the earth observer's line of
sight...
I was having trouble with some lab question on atomic emission
spectra.
Also answer the following questions about your observations: Are the lines present in the hydrogen spectrum the same lines predicted by the Bohr model the atom? Which lines, if any, are missing? Why might there be lines missing? Compare the spectral lines from your unknown substance to the other spectra you observed. Based on these comparisons, what is the identity of the unknown substance? Are there any general...
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