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

Question

Chemistry

Denise Johnson

12 January, 21:14

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

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Answers (1)

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Naima Briggs · Answer 1

The best statement that would describe effusion of gases is that at a given temperature, gas particles with smaller masses move faster. According to the Graham's Law, the rate of effusion of a gas is inversely proportional to the square root of the molecular weight of that gas. Therefore, the smaller the mass the faster it effuses.