
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Transcribed Image Text:21. Which of the following reactions releases most energy to the
surroundings?
Reaction energy change = +600 kJ/mol
Reaction energy change = -500 kJ/mol
Reaction energy change = +1500 kJ/mol
Reaction energy change = -10 kJ/mol
%3D
22. What is the specific heat of a substance if 2.41 x 104 J are needed to
change the temperature of 105 g of it from 25°C to 250°C? *
9.18 x 10-4 J/g'c
1.02 x 10-4 J/g°C
0.918 J/g°C
1.02 J/g°C
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