A system receives 525 J of heat from its surroundings and delivers 465 J of work to its surroundings. a.: What is the sign for the heat? b. What is the sign for the work? c. What is the heat change? d. Is this process endothermic or exothermic? e. Why?

A system receives 525 J of heat from its surroundings and delivers 465 J of work to its surroundings. a.: What is the sign for the heat? b. What is the sign for the work? c. What is the heat change? d. Is this process endothermic or exothermic? e. Why?

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter10: Energy

Section: Chapter Questions

Problem 81AP

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Question

A system receives 525 J of heat from its surroundings and delivers 465 J of work to its
surroundings.
a.: What is the sign for the heat?
b. What is the sign for the work?
c. What is the heat change?
上
d. Is this process endothermic or exothermic?
e. Why?

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