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Physical Chemistry

General Topics & Mole Concept

Quick practice

Question 1 of 5

Three perfect gases at absolute temperature T_{1}, T_{2} and T_3 are mixed. The masses of molecules are m_1, m_2, m_3  and the number of molecules are n_1, n_2 ,n_3  respectively. Assuming no loss of energy, the final temperature of the mixture is

A

\frac{n_{1} T_{1}^{2}+n_{2} T_{2}^{2}+n_{3} T_{3}^{2}}{n_{1} T_{1}+n_{2} T_{2}+n_{3} T_{3}}

B

\frac{\left.(n_1 T_1+n_2 T_2+n_3 T_3\right)}{n_1+n_2+n_3}

C

\frac{n_{1}^{2} T_{1}^{2}+n_{2}^{2} T_{2}^{2}+n_{3}^{2} T_{3}^{2}}{n_{1} T_{1}+n_{2} T_{2}+n_{3} T_{3}}

D

\frac{\left(T_{1}+T_{2}+T_{3}\right)}{3}

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