A gas mixture consist of 2 moles of and 4 moles of Ar at temperature T. Neglecting all vibrational modes, the total internal energy of the system is:
1. 4RT
2. 15RT
3. 9RT
4. 11RT
1. | \(2\) moles of helium occupying \(1 ~\text m^3\) at \(300 ~\text K\) |
2. | \(56~\text{kg}\) of nitrogen at \(10^5 ~\text{Nm}^{-2}\) and \(300 ~\text K\) |
3. | \(8\) grams of oxygen at \(8~\text{atm}\) and \(300 ~\text K\) |
4. | \(6 \times 10^{26}\) molecules of argon occupying \(40 ~\text m^3\) at \(900 ~\text K\) |