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MindTap Engineering for Dunlap's Sustainable Energy, SI Edition, 2nd Edition [Instant Access], 1 term (6 months)
2nd Edition
ISBN: 9781337551755
Author: DUNLAP
Publisher: Cengage Learning US
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Chapter 9, Problem 11P
To determine
Find the energy of an electron in the 1s energy level in a hydrogen atom.
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Consider a copper wire with a diameter of 1.99 mm.
(a) What is the drift speed of the electrons in the copper wire when a current of 13.0 A flows through it? Assume that each copper atom
contributes one free electron to the metal. The density of copper is 8.92 g/cm³.
x
How is the drift speed related to the current flowing in a wire? Consider the fact that there is one free electron per copper atom when
determining the charge density. m/s
(b) How does this drift speed compare to the random rms speed of an electron at 20.0°C? To make this comparison, determine the
random rms speed of an electron at 20.0°C using the ideal gas model and find the ratio of the two speeds.
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Vd
B5
Construct a Frost circle for a planar seven-membered ring with one 2p orbital on each atom of the ring and show the relative energies of its seven π molecular orbitals. Which are bonding MOs, which are antibonding, and which are nonbonding?
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