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  • A gas mixture consist of moles of oxygen and 2 moles of argon at temperature t. Neglecting all vibrational modes, teh total internal energy of the system is :    

A gas mixture consist of moles of oxygen and 2 moles of argon at temperature t. Neglecting all vibrational modes, teh total internal energy of the system is :
 

 

 

Option: 1

4RT


Option: 2

8RT


Option: 3

7RT

 


Option: 4

11RT


Answers (1)

best_answer

The correct option is (2)

In an ideal gas internal energy =\frac{f_{n} n R T}{2}

\begin{aligned} U &=\frac{f_{1} n_{1} R T}{2}+\frac{f_{2} n_{2} R T}{2} \\ &=\frac{5 \times 2 R T}{2}+\frac{3 \times 2 R T}{2}=8 R T \end{aligned}

Posted by

Rakesh

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