ne change in internal energy 125 oo1 uork vorl

Chemistry
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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
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Chemistry 101
REVIEW QUESTIONS
Chapter 7
1. What is the change in internal energy (in J) of a system that releases 575 J of heat to its
surroundings and has 425 cal of work done on it?
2. If an athlete expends 1700 kJ/h playing tennis, how long would she have to play to work
off 1.0 lb of body fat? (One pound of body fat is equivalent to 4100 nutritional Calories)
Transcribed Image Text:Chemistry 101 REVIEW QUESTIONS Chapter 7 1. What is the change in internal energy (in J) of a system that releases 575 J of heat to its surroundings and has 425 cal of work done on it? 2. If an athlete expends 1700 kJ/h playing tennis, how long would she have to play to work off 1.0 lb of body fat? (One pound of body fat is equivalent to 4100 nutritional Calories)
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