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Please help to calculate the wavelength of the line of emission in nm
A star has an emission line at a wavelength of 666.80 nm. The rest wavelength of the line is 656.3 nm. What is the velocity of the star? Hint: How does the velocity of a star depend on its observed wavelength? What is the equation for Doppler shift? The speed of light is 3.0 × 105 km/s.
An intense emission line for a new element is observed at a wavelength of 700 nm. what is the energy of a single photon of this light?
In a hydrogen atom, an emission line is observed at a wavelength of 486 nm. If the electron was excited to an energy state n = 4, from what state was the electron excited? What was the minimum energy of the excitation light source to cause the initial absorption event? Note: The Rydberg constant is 1.097373 × 107 m
The hydrogen atomic emission spectrum includes a UV line with a wavelength of 92.323 nm. Photons of this wavelength are emitted when the electron transitions to n_t = 1 as the final energy state. Is this line associated with a transition between different excited states or between an excited state and the ground state? different excited states between an excited state and the ground state What is the energy of the emitted photon with wavelength 92.323 nm? What was the...
A star has the maximum emission at a wavelength lmax=300 nm. Calculate the surface temperature of the star, assuming that the star behaves like an ideal black body.
You obtain spectra for two galaxies and measure the observed wavelength of a hydrogen emission line that has a rest wavelength of 656.3 nm. Here are your results: Galaxy 1: Observed wavelength of hydrogen line is 672.9 nm Galaxy 2: Observed wavelength of hydrogen line is 692.6 nm (a) Calculate the redshift, z, for each of the two galaxies. (b) What is each one’s recessional velocity (in km/s)? (c) Which of these galaxies is farther away from you? (d) How...
4. An intense emission line for a new element is observed at a wavelength of 325 nm. What is the frequency of this ight? Frequency Tries 0/2 Submit Answer 5. An intense emission line for a new element is observed at a wavelength of 700 nm. What is the energy of a single photon of this light Energy Tries 0/2 Submit Ans 6. For the line spectra experiment you analyzed the Baimer series to determine n and nu in the...
A line in the Balmer series of emission lines of excited H atoms has a wavelength of 410.2 nm. What is the frequency of this line? What is the energy of one photon with this wavelength?
2. Determine the corresponding emission wavelength (in nm) for the emission energies (in kJ/mol) ot each Group IA or IIA metal given in the table below. Element Emission Energy (kJ/mol) Wavelength (nm) Li 178.2 Na 203.5 К 155.3 156.5 184.8 198.7 Са 191.4 216.1 Sr 178.2 197.5 Ва 144.5 161.9
2 &3 all please 2. The first line of the Balmer series occurs at a wavelength of 656.3 nm. What is the energy difference between the two energy levels involved in the emission that results in this spectral line? 3. An advertising sign gives off red light and green light. a. Which light has the higher energy photons? b. One of the colors has a wavelength of 680 nm and the other has a wavelength of 500 nm. Which color...