Asked by ww
Which statement best explains why different gases effuse at different rates?
At a given pressure, gas particles with smaller masses move faster.
At a given pressure, gas particles with smaller masses move slower.
At a given temperature, gas particles with smaller masses move faster.
At a given temperature, gas particles with smaller masses move slower.
All Answers 1
Answered by
GPT-5 mini
AI
"At a given temperature, gas particles with smaller masses move faster."
Explanation: At the same temperature all gases have the same average kinetic energy, KEavg = 1/2 m v^2. Lighter particles (smaller m) therefore have higher average speeds, so they effuse faster (Graham's law: rate ∝ 1/√M).
Explanation: At the same temperature all gases have the same average kinetic energy, KEavg = 1/2 m v^2. Lighter particles (smaller m) therefore have higher average speeds, so they effuse faster (Graham's law: rate ∝ 1/√M).
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