Calculate the Change in Internal Energy (ΔU) for a System

question 12

Multiple Choice

Calculate the change in internal energy (ΔU) for a system that is giving off 25.0 kJ of heat and is changing from 12.00 L to 6.00 L in volume at 1.50 bar. (Remember that 100 J = 1 L bar)

• A) +25.9 kJ
• B) -16.0 kJ
• C) -25.9 kJ
• D) -24.1 kJ
• E) 937 kJ

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Definitions:

Short Run

A time period in economics during which at least one input or factor of production is fixed and cannot be changed, limiting the immediate response to changes in demand or technology.

Long Run

A period in economics sufficient for all factors of production and costs to be variable, allowing firms to adjust to market conditions fully.

Bumper Crops

An exceptionally large crop yield, often much higher than average.

Gross Incomes

The total income received before any deductions or taxes are applied.