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Question 31012
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Kinetic Theory and Thermodynamics: Pressure and KE MCQ

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Pressure and KEHardQuestion 31012

Question

Internal energy of n moles of monatomic ideal gas is:
  1. A
    nRT
  2. B
    (3/2)nRT
    Correct
  3. C
    (5/2)nRT
  4. D
    (7/2)nRT

Correct answer

(3/2)nRT

Explanation

Monatomic gas: 3 degrees of freedom. U = n × (3/2)RT per degree of freedom rule.

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