A 4-Mol Ideal Gas System Undergoes an Adiabatic Process Where

question 23

Multiple Choice

A 4-mol ideal gas system undergoes an adiabatic process where it expands and does 28 J of work on its environment.What is its change in internal energy?

• A) 28 J
• B) −28 J
• C) zero
• D) −7 J

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Definitions:

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.

Fixed Factory Overhead

The consistent, non-variable costs associated with operating a factory, such as rent, utilities, and salaried personnel.