Chemistry
12th Edition
ISBN: 9780078021510
Author: Raymond Chang Dr., Kenneth Goldsby Professor
Publisher: McGraw-Hill Education
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Chapter 7, Problem 7.143QP
When two atoms collide, some of their kinetic energy may be converted into electronic energy in one or both atoms. If the average kinetic energy is about equal to the energy for some allowed electronic transition, an appreciable number of atoms can absorb enough energy through an inelastic collision to be raised to an excited electronic state. (a) Calculate the average kinetic energy per atom in a gas sample at 298 K. (b) Calculate the energy difference between the n = 1 and n = 2 levels in hydrogen. (c) At what temperature is it possible to excite a hydrogen atom from the n = 1 level to n = 2 level by collision? [The average kinetic energy of 1 mole of an ideal gas is
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Chapter 7 Solutions
Chemistry
Ch. 7.1 - Which of the waves (a)(c) has (i) the highest...Ch. 7.1 - What is the wavelength (in meters) of an...Ch. 7.1 - Why is radiation only in the UV but not the...Ch. 7.2 - The energy of a photon is 5.87 1020 J. What is...Ch. 7.2 - The work function of titanium metal is 6.93 1019...Ch. 7.2 - A clean metal surface is irradiated with light of...Ch. 7.3 - What is the wavelength (in nanometers) of a photon...Ch. 7.3 - Which transition in the hydrogen atom would emit...Ch. 7.4 - Calculate the wavelength (in nanometers) of a H...Ch. 7.4 - Which quantity in Equation (7.8) is responsible...
Ch. 7.5 - Estimate the uncertainty in the speed of an oxygen...Ch. 7.5 - What is the difference between and 2 for the...Ch. 7.6 - Give the four quantum numbers for each of the two...Ch. 7.7 - Give the values of the quantum numbers associated...Ch. 7.7 - What is the total number of orbitals associated...Ch. 7.7 - Why is it not possible to have a 2d orbital, but a...Ch. 7.8 - Write the four quantum numbers for an electron in...Ch. 7.8 - Prob. 10PECh. 7.8 - Write a complete set of quantum numbers for each...Ch. 7.8 - The ground-state electron configuration of an atom...Ch. 7.9 - Prob. 12PECh. 7.9 - Identify the element that has the following...Ch. 7 - What is a wave? 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