A Cylinder Contains 13 Moles of an Ideal Gas at a Temperature

question 40

Multiple Choice

A cylinder contains 13 moles of an ideal gas at a temperature of 300 K. The gas is compressed at constant pressure until the final volume equal 0.70 times the initial volume. The molar heat capacity at constant volume of the gas is 24.0 J/mol ∙ K. What is the change in the internal (thermal) energy of the gas during this process? (R = 8.31 J/mol ∙ K)

• A) -28 kJ
• B) -38 kJ
• C) 28 kJ
• D) 38 kJ
• E) -9.7 kJ

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Definitions:

Outstanding Common Stock

Shares of a company's common stock that have been issued and are in the hands of investors, including those held by the public and company insiders but excluding treasury shares.

Annual Amortization

The procedure of methodically deducting the starting cost of an intangible asset throughout its period of utility.

Retained Earnings

The portion of net profits not distributed to shareholders but reinvested in the business or kept as reserve.

Net Income

The profit a company retains after deducting every expense, tax, and cost from its total income.