At 298 K the average kinetic energy is the same for H₂,He,and N₂.The gas with the highest average velocity is

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Quizplus · Accepted Answer

The average kinetic energy of a gas at a given temperature is the same for all gases. However, the average velocity of a gas molecule is inversely proportional to the square root of its molar mass. H₂S has the lowest molar mass among the options, so it will have the highest average velocity.

At 298 K the Average Kinetic Energy Is the Same