Select the gas with the highest average kinetic energy per mole at 298 k

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select the gas with the highest average kinetic energy per mole at 298 k.

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The gas with the highest average kinetic energy per mole at 298 K

The average kinetic energy of a gas is directly proportional to its temperature. According to the kinetic theory of gases, the average kinetic energy of gas molecules is related to their absolute temperature.

At a given temperature, the average kinetic energy of gas molecules is the same for all gases. Therefore, the gas with the highest average kinetic energy per mole at 298 K is the one with the highest temperature.

In this case, since the temperature is specified as 298 K, we need to compare gases at that temperature. Therefore, the gas with the highest average kinetic energy per mole at 298 K would be the one that is at the highest temperature among the options given. Without knowing the options or their temperatures, it is not possible to determine the specific gas with the highest average kinetic energy at 298 K.

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At a given temperature, the average kinetic energy per mole is the same for all gases

LectureNotes is correct in stating that at a given temperature, the average kinetic energy per mole is the same for all gases, regardless of their molecular mass or chemical nature. This is a fundamental principle of the kinetic theory of gases.

The average kinetic energy of gas molecules is directly proportional to the temperature of the gas. This means that at a specific temperature, all gas molecules will have the same average kinetic energy. Therefore, the gases CO₂, H₂, CH₃CH₂CH₃, O₂, Rn, H₂O, and He will all have the same average kinetic energy at 298 K.

It is important to note that while the average kinetic energy is the same for all gases at a given temperature, individual gas molecules within each gas will have different kinetic energies. This is due to the distribution of molecular speeds within each gas sample, which follows a Maxwell-Boltzmann distribution.

In conclusion, at 298 K, all gases, including CO₂, H₂, CH₃CH₂CH₃, O₂, Rn, H₂O, and He, will have the same average kinetic energy per mole.