1.

Two perfect gases at absolute temperatures T_1 and T_2 are mixed. There is no loss of energy. Find the temperature of the mixture if the masses of the molecules are m_1 and m_2 and the number of molecules in the gases are n_1 and n_2.

Answer»

`T= n_(1) T_(1) + n_(2) T_(2)`
`T= ( T_1)/( n_1) + (T_2)/( n_2) `
`T= ( n_1 T_1 + n_2 T_2)/( n_1 +n_2)`
`T= ( n_(1)^(2) T_(1) + n_(2)^(2) T_(2) )/( n_(1)^(2) + n_(2)^(2) )`

ANSWER :C


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