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11 Dec 2019

A sodium vapor street lamp emits yellow light at wavelength 589nm. How much energy is released if a mole of photons are emitted?

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Beverley Smith
Beverley SmithLv2
13 Dec 2019

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Related questions

6.22
If you put 120 volts of electricity through a pickle, the picklewill smoke and start glowing an orange-yellow color. The light isemitted because the sodium ions in the pickle become excited; theirreturn to the ground state results in light emission (see Figure6.13b and Sample Exercise 6.3).
(a) The wavelength of this emitted light is 589 nm. Calculate itsfrequency.
(b) What is the energy of 0.10 mole of these photons?
(c) Calculate the energy gap between the excited and ground statesfor the sodium ion.
(d) If you soaked the pickle for a long time in a different saltsolution, such as strontium chloride, would you still observe 589nm light emission? Why or why not?

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The bright yellow light emitted by a sodium vapor lamp consistsof two emission lines at 589.0 and 589.6 nm. What are the frequencyand the energy of a photon of light at each of these wavelengths?What are the energies in kJ/mol?

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