An insulated container with a divider in the middle contains two separated gases

Question

An insulated container with a divider in the middle contains two separated gases. Gas 1 is initially at a higher temperature than gas 2. The divider is then removed. Which of the following observations might be made over a period of times as the two gases mix together, and why? (A) Gas 1 remains at a higher temperature than gas 2 because gas 1 started at a higher temperature. (B) Gas 1 remains at a higher temperature than gas 2 because gas 1 started with a higher kinetic energy. (C) On average, the molecules of gas 1 lose all of their kinetic energy to the molecules of gas 2 through collision, resulting in gas 2 eventually having a higher temperature than gas 1. (D) On average, the molecules of gas 1 lose some of their kinetic energy to the molecules of gas 2 through collisions, resulting in the two gases eventually having the same temperature.

Explanation / Answer

option D is the correct answer.

Because, when the devider is removed both gases mix and the energy is tranfered to the cold gas from hot gas untill both gas molecules reach the same temperature.

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