What is the temperature at which all the gas molecule become immobile?
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Answer
According to the molecular kinetic theory of gas, the average kinetic energy per molecule of gas is directly proportional to the absolute temperature, that mean $\frac{1}{2} mC _{ rms }^2 \propto T$ The mean square velocity $\left( C _{ rms }\right)$ of the gas will be zero if absolute temeprature $T =0$. Therefore, at absolute zero temperature all the molecules become motionless.
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