Rank the following substances in order of increasing average velocity, assuming they are all at the same temperature: N₂, CH₄, Ne, Kr A)N₂

Question

Rank the following substances in order of increasing average velocity, assuming they are all at the same temperature: N₂, CH₄, Ne, Kr A)N₂< CH₄< Ne < Kr B)CH₄< Ne < N₂< Kr C)Kr < N₂< Ne < CH₄ D)Ne < CH₄< N₂< Kr E)Ne < Kr < N₂< CH₄

Quizplus · Accepted Answer

The average velocity of gas molecules is inversely proportional to the square root of their molar mass. Kr has the highest molar mass, followed by N2, Ne, and CH4, which means Kr has the lowest average velocity and CH4 has the highest.

Rank the Following Substances in Order of Increasing Average Velocity