Question

Three perfect gases at absolute temperatures T_1,T₂ and T₃ are mixed. The masses of molecules are m₁,m₂ and m₃ and the number of molecules are n₁, n₂ and n₃ respectively. Assuming no loss of energy, the final temperature of the mixture is

Answer 1

(b) : The final temperature of the mixture is

T_mixture   = (T₁n₁ + n₂T₂ + n₃T₃)/(n₁ + n₂ + n₃).