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What are the main sources of the energy consumed in the

Chemistry: A Molecular Approach | 3rd Edition | ISBN: 9780321809247 | Authors: Nivaldo J. Tro ISBN: 9780321809247 1

Solution for problem 30E Chapter 6

Chemistry: A Molecular Approach | 3rd Edition

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Chemistry: A Molecular Approach | 3rd Edition | ISBN: 9780321809247 | Authors: Nivaldo J. Tro

Chemistry: A Molecular Approach | 3rd Edition

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Problem 30E

Problem 30E

What are the main sources of the energy consumed in the United States?

Step-by-Step Solution:
Step 1 of 3

Solution: Step1: Given, the energy required to break the Cl-Cl bond in Cl = 242 kJ/mol 2 = 242 x 10 J/mol 3 23 = (242 x 10 J) / (6.023 x 10 ) [1 mol = 6.023 x 10 photons] = 40.18 x 10 -20J -19 = 4.02 x 10 J. Step2: According to Planck’s quantum theory of radiation, the amount of energy associated with a quantum(in case of light, the quantum of energy is often called photon) of radiation is proportional to the frequency of light, E = h ---(1), where h is a universal constant called Planck’s constant. is the frequency and E is the energy of a photon. Or, E = hc/ -------(2), where, is the wavelength of light and c is the velocity. -19 Here, energy of the radiation emitted = 4.02 x 10 J. -34 Planck's constant, h = 6.626 x 10 J.s Velocity of light, c = 3 x 10 m/sec 8 Substituting the values in equation (2), we get, 4.02 x 10 -19J = [(6.626 x 10 J.s) x (3 x 10 m/sec)] / = [(6.626 x 10 J.s) x (3 x 10 m/sec)] / (4.02 x 10 -19J) -7 = 4.94 x 10 m. Thus, the longest wavelength of radiation that possesses the necessary energy to break the bond -7 is 4.94 x 10 m. Step3: Out of all the radiations in the electromagnetic spectrum, the wavelength of the visible light ranges from 4 x 10 m to 7 x 10 m. Thus, the electromagnetic radiation in the above problem lies in the visible light region. --------------------

Step 2 of 3

Chapter 6, Problem 30E is Solved
Step 3 of 3

Textbook: Chemistry: A Molecular Approach
Edition: 3
Author: Nivaldo J. Tro
ISBN: 9780321809247

The full step-by-step solution to problem: 30E from chapter: 6 was answered by , our top Chemistry solution expert on 02/22/17, 04:35PM. The answer to “What are the main sources of the energy consumed in the United States?” is broken down into a number of easy to follow steps, and 13 words. This full solution covers the following key subjects: Energy, radiation, Bond, break, electromagnetic. This expansive textbook survival guide covers 82 chapters, and 9454 solutions. This textbook survival guide was created for the textbook: Chemistry: A Molecular Approach, edition: 3. Chemistry: A Molecular Approach was written by and is associated to the ISBN: 9780321809247. Since the solution to 30E from 6 chapter was answered, more than 377 students have viewed the full step-by-step answer.

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