Physics for Scientists and Engineers with Modern, Revised Hybrid (with Enhanced WebAssign Printed Access Card for Physics, Multi-Term Courses)
Physics for Scientists and Engineers with Modern, Revised Hybrid (with Enhanced WebAssign Printed Access Card for Physics, Multi-Term Courses)
9th Edition
ISBN: 9781305266292
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
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Chapter 43, Problem 7OQ
To determine

To arrange the given energies from the largest in magnitude to smallest in magnitude for a typical material composed of covalently bonded diatomic molecules.

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The potential energy of two atoms in a diatomic molecule is approximated by U(r) = a/r12-b/r6, where r is the spacing between atoms and a and b are positive constants. Suppose the distance between the two atoms is equal to the equilibrium distance found in part A. What minimum energy must be added to the molecule to dissociate it - that is, to separate the two atoms to an infinite distance apart? This is called the dissociation energy of the molecule. Express your answer in terms of the variables a and b. For the molecule CO, the equilibrium distance between the carbon and oxygen atoms is 1.13\times 10-10m and the dissociation energy is 1.54\times 10-18J per molecule. Find the value of the constant a. Express your answer in joules times meter in the twelth power. Find the value of the constant b. Express your answer in joules times meter in the sixth power.
Q3: The potential energy function for the force between two atoms in a diatomic molecule is approximately given by U(x) = - 읆 옮 , where a and b are constant and x is the distance between the atoms. If the dissociation energy of the molecule is (U(x= ∞) -U at equilibrium), D is (a) b²/6a (b) b²/2a (c) b²/12a (d) b²/4a
Nitrogen molecules are made of two nitrogen atoms with atomic weight of 14 each. Water molecules are made of one oxygen of 16 atomic mass units and two hydrogens of 1 atomic mass unit each. If you have one gram of each substance in vapor form, at high enough temperature that all molecular vibration and rotation modes are accessible, and the two substances are at the same temperature, what is the ratio of the total energy content of the nitrogen to that of the water?

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Physics for Scientists and Engineers with Modern, Revised Hybrid (with Enhanced WebAssign Printed Access Card for Physics, Multi-Term Courses)

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