Quiz 4 Answers, 3-12-08

Quiz 4 Answers, 3-12-08 - Quiz 4, March 12, 2008 Write down...

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Quiz 4, March 12, 2008 E = h ν λν = c c = 3.0 × 10 8 m/s h = 6.63 × 10 -34 J·s (Planck) R = 2.18 × 10 -18 J (Rydberg) Write down the following information to use during the quiz = 2 1 n R E mv h = λ (de Broglie) v
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1 . Light is absorbed when an electron in the n = 1 level of an H atom moves into the n = 3 level. Following the absorption of light, the H-atom emits a photon and the electron moves to the n = 2 level. Which of the following statements is true? A. The net value of the internal energy change for the two steps is + answer B. The emitted light has a shorter wavelength than the absorbed light. C. Light cannot be emitted for the n = 3 to n = 2 transition of H atoms D. The frequency of the absorbed light is smaller than the frequency of the emitted light E. None of the above statements is true
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2. The work function for Li ( s ) is 280 kJ/mol. When light composed of photons with a certain energy hits the surface of Li (s), the electrons leaving the surface have a
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This note was uploaded on 08/06/2008 for the course CHEM 1B taught by Professor Watts during the Winter '08 term at UCSB.

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Quiz 4 Answers, 3-12-08 - Quiz 4, March 12, 2008 Write down...

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