Calculate the Collision Frequency in a Gaseous Sample of Nitrogen

question 4

Multiple Choice

Calculate the collision frequency in a gaseous sample of nitrogen molecules, N₂, at a temperature of 25 °C and pressure of 1 atm. The collision cross section of a nitrogen molecule is 0.43 nm² and the mean speed at this temperature is 474 m s^-1.

• A) 76000 s^-1
• B) 907  10³ s^-1
• C) 7.7  10⁹ s^-1
• D) 1.0  10¹⁰ s^-1

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