Please consider 0.15 gm of Constantan (a Cu/Ni alloy widely used in thermocouples, c = 390 J/•K-kg) that cooled through exposure to the laboratory atmosphere (T 22 °C) from 620 °C to 20 C. a. Please determine the change in entropy of the Constantan (in J/ K- kg). b. Please determine the change in entropy of the laboratory atmosphere (in J/ K-kg). c. Please determine the change in entropy of the universe (in J/"K-kg).

Please consider 0.15 gm of Constantan (a Cu/Ni alloy widely used in thermocouples, c = 390 J/•K-kg) that cooled through exposure to the laboratory atmosphere (T 22 °C) from 620 °C to 20 C. a. Please determine the change in entropy of the Constantan (in J/ K- kg). b. Please determine the change in entropy of the laboratory atmosphere (in J/ K-kg). c. Please determine the change in entropy of the universe (in J/"K-kg).

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

1. Please consider 0.15 gm of Constantan (a Cu/Ni alloy widely used in
thermocouples, c = 390 J/•K-kg) that cooled through exposure to the
laboratory atmosphere (T 22 •C) from 620 C to 20 C.
a. Please determine the change in entropy of the Constantan (in J/ K-
kg).
b. Please determine the change in entropy of the laboratory
atmosphere (in J/ K-kg).
c. Please determine the change in entropy of the universe (in J/ K-kg).
%3D

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