What is the mean free path for the molecules in an ideal gas when the pressure is 100 kPa and the temperature is 300 K given that the collision cross-section for the molecules of that gas is 2.0 × 10-20 m2? The Boltzmann constant is 1.38 × 10-23 J/K,Avogadro's number is 6.02 × 1023 molecules/mole,and the ideal gas constant is R = 8.314 J/mol ∙ K =
0.0821 L ∙ atm/mol ∙ K.
A) 1.1 × 10-6 m
B) 2.1 × 10-6 m
C) 1.7 × 10-6 m
D) 5.3 × 10-6 m
E) 1.5 × 10-6 m
Correct Answer:
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