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For substances that will be in thermal contact, how would we know which will absorb energy (heat), and which will release energy in the form of heat?

For substances that will be in thermal contact, how would we know which will absorb energy (heat), and which will release energy in the form of heat?

Chemistry
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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1. For substances that will be in thermal contact, how would we know which will absorb energy (heat), and which will release energy in the form of heat?
Transcribed Image Text:1. For substances that will be in thermal contact, how would we know which will absorb energy (heat), and which will release energy in the form of heat?
CALORIMETRY HEAT OF FUSION Trial 1 Trial 2 Mass of ice Mece (grams) 79 79 Mass of warm water 120 119 Mwater (grams) Initial temperature of water Tinitial (°C) 41 42 Final temperature of mixture Tfinal (°C) -4 1 Calculated heat of fusion of ice 72.4 60.8 Lexperimental (cal/g) Standard value of heat of fusion of ice Ls,standard (cal/g) 79.7 79.7 Percentage error 9.22% 23.76%
Transcribed Image Text:CALORIMETRY HEAT OF FUSION Trial 1 Trial 2 Mass of ice Mece (grams) 79 79 Mass of warm water 120 119 Mwater (grams) Initial temperature of water Tinitial (°C) 41 42 Final temperature of mixture Tfinal (°C) -4 1 Calculated heat of fusion of ice 72.4 60.8 Lexperimental (cal/g) Standard value of heat of fusion of ice Ls,standard (cal/g) 79.7 79.7 Percentage error 9.22% 23.76%
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