Chapter 7 Workout Problems

Chapter 7 Workout Problems - Calculate the energy of the n...

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Chapter 7 Wavelength Frequency Conversions The frequency of radiation used in all microwave ovens sold in the US is 2.45GHz. What is the wavelength, in meters, of this radiation? Compare the wavelength of microwave radiation with the wavelength of light in the visible region- say, orange light with wavelength = 625nm. Photon Energies Compare the energy of a mole of photons of orange light (625nm) with the energy of a mole of photons of microwave radiation having a frequency of 2.45GHz (1GHz = 10^9 s^-1). Which has the greater energy? By what factor is one greater than the other? Energies of the Ground and Excited States of the H Atom Calculate the energies of the n =1 and the n = 2 states of the hydrogen atom in joules per atom and in kilojoules per mole. What is the difference in energy of these two states?

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Unformatted text preview: Calculate the energy of the n = 3 state of the H atom in joules per atom and kilojoules per mole. Calculate the wavelength of the green line in the visible spectrum of excited H atoms using the Bohr theory. The Lyman series of spectral lines for the H atom occurs in the ultraviolet region. They arise from transitions form higher levels to n = 1. Calculate the frequency and wavelength of the least energetic line in this series. Calculate the wavelength associated with an electron of a mass = 9.109 * 10^-28g that travels at 40% of the speed of light. Calculate the wavelength associated with a neutron having a mass of 1.675 * 10^-24 g and a kinetic energy of 6.21*10^-21J. (Recall that the kinetic energy of a moving particle is E = mv^2.)...
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This homework help was uploaded on 04/14/2008 for the course CHEM 101 taught by Professor Williamson during the Fall '08 term at Texas A&M.

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Chapter 7 Workout Problems - Calculate the energy of the n...

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