First Law of Thermodynamics: a Container with Rigid Walls Is

question 40

Multiple Choice

First law of thermodynamics: A container with rigid walls is filled with 4 mol of air with C_V = 2.5R. How much does the internal (thermal) energy change if the temperature of the air rises from 16°C to 437°C? The ideal gas constant is R = 8.314 J/mol ∙ K.

• A) 35 kJ
• B) 421 J
• C) 3.5 kJ
• D) 8.75 kJ

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Definitions:

Price Elasticity

The determination of how price alterations influence the market demand for a commodity.

Marginal Value

The additional satisfaction or utility received by consuming one more unit of a good or service.

Consumer's Demand

The desire of purchasers, users, or consumers for specific goods or services at a given price over a specified period.

Substitution Effect

The economic principle that as prices rise or incomes decrease, consumers will replace more expensive items with less costly alternatives.