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At about what pressure would the mean free path of an air
Chapter 1, Problem 63P(choose chapter or problem)
QUESTION:
Problem 63P
At about what pressure would the mean free path of an air molecule at room temperature equal 10 cm, the size of a typical laboratory apparatus?
Questions & Answers
QUESTION:
Problem 63P
At about what pressure would the mean free path of an air molecule at room temperature equal 10 cm, the size of a typical laboratory apparatus?
ANSWER:
Step 1
The mean free path of the molecule of the gas is given by
We also know that
Using the above two equation we can write that
Using this formula we have to calculate the pressure at which the mean free path will be equal to the 10 cm.