A Cylinder Contains 24

question 2

Multiple Choice

A cylinder contains 24.0 moles of an ideal gas at a temperature of 300 K. The gas is compressed at constant pressure until the final volume equals 0.63 times the initial volume. The molar heat capacity at constant volume of the gas is 24.0 J/mol ∙ K and the ideal gas constant is R = 8.314 J/mol ∙ K. The change in the internal (thermal) energy of the gas is closest to

• A) -64 kJ.
• B) -86 kJ.
• C) 64 kJ.
• D) 86 kJ.
• E) -22 kJ.

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