A rigid tank contains an ideal gas at 40°C that is being stirred by a paddle wheel. The paddle wheel does 160 kJ of work on the ideal gas. It is observed that the temperature of the ideal gas remains constant during this process as a result of heat transfer between the system and the surroundings at 30°C. Determine the entropy change of the ideal gas. Heat 30°C Ideal gas 40°C The entropy change of the ideal gas is KJ/K.

A rigid tank contains an ideal gas at 40°C that is being stirred by a paddle wheel. The paddle wheel does 160 kJ of work on the ideal gas. It is observed that the temperature of the ideal gas remains constant during this process as a result of heat transfer between the system and the surroundings at 30°C. Determine the entropy change of the ideal gas. Heat 30°C Ideal gas 40°C The entropy change of the ideal gas is KJ/K.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Entropy

In physics, entropy means the amount of disorder or the degree of randomness associated with a thermodynamic system. The system is not self-organized when the entropy of the system is high. For instance, when a system is at an elevated temperature, its molecules are in random motion, vibrating and colliding with each other. During this scenario, the probability of finding a molecule at a particular place twice, is low. Under this circumstance, the system can be said to be in a high entropy.

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**Transcription for Educational Website**

**Problem Statement:**

A rigid tank contains an ideal gas at 40°C that is being stirred by a paddle wheel. The paddle wheel does 160 kJ of work on the ideal gas. It is observed that the temperature of the ideal gas remains constant during this process as a result of heat transfer between the system and the surroundings at 30°C. Determine the entropy change of the ideal gas.

**Diagram Explanation:**

The diagram illustrates a tank with ideal gas at 40°C. A paddle wheel is inserted into the tank to stir the gas. An arrow labeled "Heat" indicates the exchange of heat between the system and its surroundings at 30°C. The paddle wheel is depicted performing work on the gas.

**Question:**

The entropy change of the ideal gas is _______ kJ/K.

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