One Compartment of an Insulated Rigid Tank Contains 3 Kmol

Multiple Choice

One compartment of an insulated rigid tank contains 3 kmol of CO₂ at 20°C and 140 kPa while the other compartment contains 5 kmol of H₂ gas at 35°C and 280 kPa. Now the partition between the two gases is removed, and the two gases form a homogeneous ideal gas mixture. The temperature of the mixture is

A) 25°C
B) 28°C
C) 22°C
D) 32°C
E) 34°C