A gas that works on the surroundings is equal to 432 J. At the same time, it absorbs 87 J of heat from the surroundings. Calculate the change in energy of the gas.

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
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A gas that works on the surroundings is equal to 432 J. At the same time, it absorbs 87 J of heat from the surroundings. Calculate the change in energy of the gas.

2. A work of 657 J is done on a system that releases 434 J of heat. What is the energy change in the system?

3. Which system does more work? a. AE = 221 J, q = 357 J b. AE-404 J, q = 395 J

4. If the technology does 57 J of work after absorption of 38 J of heat, what is the change in the internal energy of the technology?

5. How much work is done on a system that has internal energy change of 105 J and heat absorbed of 78 J?

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