The translational kinetic energy of N molecules of is x J at -123°C. Another sample of at 27°C has translational kinetic energy of 2x J. The latter sample contains

Question

The translational kinetic energy of N molecules of $O_2$ is x J at -123°C. Another sample of $O_2$ at 27°C has translational kinetic energy of 2x J. The latter sample contains

Prashant Kotian · Accepted Answer

Correct answer: A. KE = 1.5 * n * R * T. T1 = 150 K, T2 = 300 K . Since T2 = 2 * T1, if the number of molecules (and hence moles) remains N, the kinetic energy naturally doubles to 2x. Thus, the latter sample contains N molecules .

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