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:

Variable Factory Overhead

Costs in manufacturing that vary with the level of production output, such as utilities and materials used in the production process.

Controllable Variance

The difference between actual budgeted costs and the controllable costs within a budget period.

Fixed Factory Overhead

Indirect manufacturing costs that remain relatively constant regardless of the level of production, such as rent, depreciation, and salaries of factory supervisors.

Volume Variance

The difference between the expected volume of sales or production and the actual volume, which can impact costs and profitability.