In a Certain Reversible Expansion, a System at 300

question 91

Multiple Choice

In a certain reversible expansion, a system at 300. K absorbs exactly 6.00 × 10² J of heat. In the irreversible recompression to the original state of the system, twice as much work is done on the system as is performed on the surroundings in the expansion. What is the entropy change of the system in the recompression step?

• A) 0.00 J/K
• B) 2.00 J/K
• C) -4.00 J/K
• D) -2.00 J/K
• E) 4.00 J/K

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Definitions:

Electrical Impulses

Rapidly moving electrical signals that are the primary method of communication within the nervous system, allowing for the coordination of bodily functions.

ECG Machine

An electrocardiogram machine, a medical device used to record the electrical activity of the heart to detect cardiac abnormalities.

Amplifier

A device on an electrocardiograph that enlarges the ECG impulses.

Electrical Impulses

Quick bursts of electrical activity that carry messages within the body, especially within the nervous system.