Question

( begin{aligned} Delta u &=frac{f}{2} n R+frac{f}{2} n R T &=frac{5}{3} cdot 2 R T+frac{3}{4} times R T times mu^{2} &=5 R+6 R T &=11 R T quad G end{aligned} )

# A gas mixture consists of 2 moles of oxygen and 4 moles of argon at temperature T. Neglecting a vibrational modes, the total internal energy of the system is :- (A) 4 RT (B) 15 RT (C) 9 RT (D) 11 RT

Solution