A) 20 RT
B) 12 RT
C) 4 RT
D) 15 RT
Correct Answer: D
Solution :
Here, oxygen molecule has three translational and two rotational degree of freedom whereas an argon atom has three translational degree of freedom only. As each translational and rotational degree of freedom corresponds to energy \[\frac{1}{2}\]RT for 1 mole. So total internal energy of the system is \[({{n}_{1}}{{f}_{1}}+{{n}_{2}}{{f}_{2}})\frac{1}{2}RT=\{3(3+2)+5(3)\}\frac{1}{2}RT\]\[=15RT\]You need to login to perform this action.
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