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2 cards from this section. Quick, good the night before a test.
What is the mean free path of a gas?
Think about how frequently gas molecules collide.
How does the number density affect the mean free path?
Consider what happens when more molecules are in a given volume.
What does the mean free path indicate in gas behavior?
Reflect on the key definition.
True or False: A larger mean free path suggests more molecular collisions.
Remember the relationship between path length and collision frequency.
Given a gas with a number density of 3 × 10²⁵ m⁻³ and a molecular diameter of 1.5 × 10⁻¹⁰ m, calculate the mean free path.
Ensure all units match when plugging values into the formula.
Discuss how changing the conditions from STP to higher pressure influences the mean free path of a gas.
Think through the relationship between pressure and molecular spacing.
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