define kinetic energy of one molecule
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In an ideal gas, there are no attractive forces between the gas molecules, and there is no rotation or vibration within the molecules. The kinetic energy of the translational motion of an ideal gas depends on its temperature. ... 2) One mole (mol) of any substance consists of molecules(Avogadro's number).
In an ideal gas, there are no attractive forces between the gas molecules, and there is no rotation or vibration within the molecules. The kinetic energy of the translational motion of an ideal gas depends on its temperature. ... 2) One mole (mol) of any substance consists of molecules(Avogadro's number).
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The kinetic energy of a molecule in a diatomic gas is, as you correctly stated,
5/2(NkT) = 5/2(nRT)
However, this is only an approximation and applies in intermediate temperatures. At lower temperatures, the only contribution to kinetic energy is due to the translational motion. At higher energies, two additional contributions (kinetic and potential) come from vibration.
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5/2(NkT) = 5/2(nRT)
However, this is only an approximation and applies in intermediate temperatures. At lower temperatures, the only contribution to kinetic energy is due to the translational motion. At higher energies, two additional contributions (kinetic and potential) come from vibration.
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