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Mothballs are composed primarily of the hydrocarbon

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

Solution for problem 74E 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 74E

Mothballs are composed primarily of the hydrocarbon naphthalene (C10H8) . When 1.025 g of naphthalene burns in a bomb calorimeter, the temperature rises from 24.25 0C to 32.33 0C. Find for the combustion of naphthalene. The heat capacity of the calorimeter, determined in a separate experiment, is 5.11 kJ/0C.

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Step 2 of 3

Solution 74E: tep 1 of 3 A sample of naphthalene is combusted in a bomb calorimeter. Heat (q) is transferred to a system by absorption which causes a change in temperature (T) of the system. The change in temperature is directly proportional to the heat transferred. Therefore, heat absorbed by the system is given by: q T (Or) q = CT where’C’ is the proportionality constant known as heat capacity of the system. Step 2 of 3 Mass of naphthalene = 1.025g Tfinalfinal temperature of naphthalene = 32.33 C Tinitialnitial temperature of naphthalene = 24.25 C The change in temperature, T = 32.33 C – 24.25 C = 8.08 C The heat capacity of the bomb calorimeter, C = 5.11 kJ/ C 0 Therefore, heat absorbed by the calorimeter is: q = CT cal (5.11 kJ ÷C)×8.08C = 41.29 kJ

Step 3 of 3

Chapter 6, Problem 74E is Solved
Textbook: Chemistry: A Molecular Approach
Edition: 3
Author: Nivaldo J. Tro
ISBN: 9780321809247

This textbook survival guide was created for the textbook: Chemistry: A Molecular Approach, edition: 3. This full solution covers the following key subjects: naphthalene, calorimeter, heat, capacity, combustion. This expansive textbook survival guide covers 82 chapters, and 9454 solutions. Since the solution to 74E from 6 chapter was answered, more than 685 students have viewed the full step-by-step answer. The full step-by-step solution to problem: 74E from chapter: 6 was answered by , our top Chemistry solution expert on 02/22/17, 04:35PM. Chemistry: A Molecular Approach was written by and is associated to the ISBN: 9780321809247. The answer to “Mothballs are composed primarily of the hydrocarbon naphthalene (C10H8) . When 1.025 g of naphthalene burns in a bomb calorimeter, the temperature rises from 24.25 0C to 32.33 0C. Find for the combustion of naphthalene. The heat capacity of the calorimeter, determined in a separate experiment, is 5.11 kJ/0C.” is broken down into a number of easy to follow steps, and 49 words.

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