Chap_7_HW_solutions

Chap_7_HW_solutions - Chapter 7 Homework Solutions 36 One type of electromagnetic radiation has a frequency of 107.1 MHz another type has a

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Chapter 7 Homework Solutions 36. One type of electromagnetic radiation has a frequency of 107.1 MHz, another type has a wavelength of 2.12 x 10 -10 m, and another type of electromagnetic radiation has photons with energy equal to 3.97 x 10 -19 J/photon. Identify each type of electromagnetic radiation and place them in order of increasing photon energy and increasing frequency. 40. It takes 208.4 kJ of energy to remove 1 mole of electrons from an atom on the surface of rubidium metal. How much energy does it take to remove a single electron from an atom on the surface of solid rubidium? What is the maximum wavelength of light capable of doing this?
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42. Neutron diffraction is used in determining the structures of molecules. a. Calculate the de Broglie wavelength of a neutron moving at 1.00% of the speed of light. b. Calculate the velocity of a neutron with a wavelength of 75 pm (1 pm = 10 -12 m). 54. An excited hydrogen atom emits light with a wavelength of 397.2 nm to reach the energy level for which n = 2. In which principal quantum level did the electron begin?
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x for each of the following. a. an electron with v = 0.100 m/s b. a baseball (mass = 145 g) with v = 0.100 m/s c. How does the answer in part a compare with the size of a hydrogen atom? d. How does the answer in part b correspond to the size of a baseball?
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This note was uploaded on 10/23/2010 for the course CHEM 105A taught by Professor Bau during the Fall '04 term at USC.

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Chap_7_HW_solutions - Chapter 7 Homework Solutions 36 One type of electromagnetic radiation has a frequency of 107.1 MHz another type has a

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