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A flask at room temperature contains exactly equal amounts (in moles) of nitrogen and xenon.?
The molecules or atoms of which gas have the greater average velocity?
A)nitrogen
B)xenon
C)molecules of both gases have the same partial pressure
1 réponse
- pisgahchemistLv 7il y a 7 ansRéponse favorite
Since both gases must have the same temperature, then they both have the same average kinetic energy.
KE = ½mv²
The speed of the molecules is inversely proportional to the mass. The more massive the molecules, the slower they are going. Since Xe is more massive than N2, Xe molecules are moving more slowly, or N2 molecules are moving with a greater average speed.
