Calculate average spacing of molecules

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To calculate the average separation between molecules in CHCl3, first determine the number of molecules per cubic centimeter, which is approximately 7.487 x 10^21. Each molecule occupies a volume of 133.6 Å^3, suggesting a simple cubic packing arrangement. The average separation refers to the distance between the centers of adjacent molecules. This can be calculated by finding the cube root of the volume occupied by each molecule and then determining the distance between the centers of two adjacent cubic boxes. The final calculation will provide the average distance between nearest neighbor molecules.
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Homework Statement



CHCl3 has M= 119 gmol^-1, density (rho) = 1.48 gcm^-3
Find the average separation between molecules in the liquid assuming a simple cubic packing


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The Attempt at a Solution




I have found that there are 7.487x10^21 molecules cm^-3. Each molecule "occupies" a box of 133.6 Å^3. Now what should I do? I don't properly understand what they mean by separation.
 
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Hi helpmeplease1,

I believe by separation they mean the distance between nearest neighbors. If you think of the molecules as being in the center of the cubical box (whose volume you found), what's the distance between the center of two adjacent boxes?
 

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