An ideal gas of N diatomic molecules has temperature T.If the number of molecules is doubled without changing the temperature, the internal energy increases by:
A)0
B)1/2 NkT
C)3/2 NkT
D)5/2 NkT
E)3 NkT

Question

Quizplus · Accepted Answer

The internal energy of an ideal diatomic gas is given by U = (5/2)NkT. Doubling the number of molecules doubles the internal energy, resulting in an increase of (5/2)NkT.

An Ideal Gas of N Diatomic Molecules Has Temperature T