Question 470: Thermodynamics & KTG

Question

A gas mixture consists of 3 moles of oxygen and 5 moles of argon at temperature T. considering only translational and rotational modes, the total internal energy of the system is :

Accepted Answer

U $$ = {{{f_1}} \over 2}{n_1}RT + {{{f_2}} \over 2}{n_2}RT$$
$$ = {5 \over 2}\left( {3RT} ight) + {3 \over 2} 	imes 5RT$$
U $$ = 15RT$$

Answer

12 RT

Answer

20 RT

Answer

4 RT

Answer

15 RT

Thermodynamics & KTG

A gas mixture consists of 3 moles of oxygen and 5 moles of argon at temperature T. considering only translational and rotational modes, the total internal energy of the system is :

Choose the correct answer: