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### Topic: number density and average distance  (Read 6453 times)

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#### plu

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##### number density and average distance
« on: February 26, 2006, 01:48:29 PM »
I'd like to confirm a thought: The average distance between molecules in a gas is the cube root of the inverse of the number density of the gas.  Is this correct?
« Last Edit: February 26, 2006, 01:49:55 PM by plu »

#### Juan R.

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##### Re:number density and average distance
« Reply #1 on: March 04, 2006, 01:37:30 PM »
I'd like to confirm a thought: The average distance between molecules in a gas is the cube root of the inverse of the number density of the gas.  Is this correct?

I see you are not receiving help in this point.

rho = N / V

take a cube of side L

rho = N / (L L L)

you are searching L /N, then

(L/N) = 1 / (L L rho)
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