   Chapter 5, Problem 29PS

Chapter
Section
Textbook Problem

When 745 J of energy in the form of heat is transferred from the environment to a gas, the expansion of the gas does 312 J of work on the environment. What is the change in internal energy of the gas?

Interpretation Introduction

Interpretation:

The change in internal energy of gas has to be determined.

Concept Introduction:

The internal energy, U is the sum of kinetic energy and the potential energy inside the system.

Change in internal energy,ΔU, is the measures of energy that is transferred as heat and work from the system or to the system.

ΔU=qp+Wp

Where q = heat energy absorbed or released, W =work done to the system or from the system.

W=-P(ΔV) ,

Where ΔV the change in volume and P is the pressure

Explanation

Given,

Energy,q= 745J

Work done, W =-312J

Change in internal energy, ΔU=qp+Wp

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