Mean Free Path: What Is the Mean Free Path of a Gas

question 81

Multiple Choice

Mean free path: What is the mean free path of a gas of randomly-moving hard spheres of radius 2.00 × 10^-9 m when the density of spheres is 3.00 × 10¹⁹ per cubic meter?

• A) 1.17 × 10^-4 m
• B) 4.00 × 10^-9 m
• C) 9.76 × 10^-5 m
• D) 1.88 × 10^-3 m
• E) 4.69 × 10^-4 m

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