Two perfect monoatomic gases at absolute temperature `T_(1)` and `T_(2)` are mixed. There is no loss of energy. Find the temperature of the mixture if the number of moles in the gases are` n_(1)` and `n_(2)`.

Answer

A, B

Explanation

From energy conversation principle,
`E_i = E_f`
or `E_1 + E_2 = E`
`:. n_1(3/2RT_1) + n_2(3/2R T_2)= (n_1 + n_2)(3/2R T)_`
`:. T = (n_1 T_1 + n_2 T_2)/(n_1 + n_2)`.