Answered: A gas is warmed and gains 48J of heat.…

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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Question

A gas is warmed and gains 48J of heat. The gas expands as it is heated and work is done by the system to equal 72 J. What are the values of q, w, and ∆U?

Expert Solution

Step 1

Answer : We have to calculate energy ,work and heat .

Explanation :

Since gas is warmed so system is gaining heat therefore , if system is gaining heat it will be positive .

I.e q = +48 J

Since ,work is done by the system on the surrounding .So, it will be negative

I.e w = -72 J

According to first law of thermodynamics :

dU = dq + dw

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