1e03-tut4-q

1e03-tut4-q - CHEM 1E03 TUTORIAL #4 _ 1. The McMaster...

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CHEM 1E03 TUTORIAL #4 ________________________________________________________________________ Page 1 of 2 1. The McMaster student FM radio station CFMU broadcasts at a frequency of 93.3 MHz (MHz = 1 megahertz = 10 6 s 1 ). a) What is the wavelength of this signal in meters? b) What is the energy of one photon of this frequency? c) Compare the photon energy of part b with the energy of a photon of red light with wavelength 685 nm. 2. Sodium vapour lamps used for street lighting emit two yellow lines that are part of the atomic spectrum of sodium. One of the lines has a wavelength of 589.0 nm, and the other has a wavelength of 589.6 nm. a) Express each of these wavelengths in meters. b) What is the frequency of each of these lines? c) How much more energy, in joules, does a photon of 589.0 nm possess, as compared to a photon of 589.6 nm? 3. The longest-wavelength (i.e. lowest energy) light that causes an electron to be emitted from a gaseous lithium atom is 520. nm. Gaseous lithium atoms are irradiated with light of
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1e03-tut4-q - CHEM 1E03 TUTORIAL #4 _ 1. The McMaster...

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