# Ideal gas law to find volume

1. Nov 13, 2007

### jaded18

Consider an ideal gas at 27.0 degrees Celsius and 1.00 atmosphere pressure. Imagine the molecules to be uniformly spaced, with each molecule at the center of a small cube.

What is the length L of an edge of each small cube if adjacent cubes touch but don't overlap?
______________
I know that the ideal gas law states V=nRT/p and that in this case R=8.2057(10^-5) m^3 (atm/mol*K), p=1atm, T=27+273K. What is n???? I can't solve without n!

2. Nov 13, 2007

### TMM

Simply plug and chug.

You may be forgetting to convert 27 centigrade to an absolute temperature scale such as kelvin.

Never mind that; I didn't see the second part of your post.

As for n, think about how many atoms you are finding the "cube" for.

Last edited: Nov 13, 2007
3. Nov 13, 2007

### jaded18

am i approaching it the wrong way?

4. Nov 13, 2007

### TMM

No you are approaching it the right way.

Think about n. How many moles is one particle?

5. Nov 13, 2007

### jaded18

are you looking for 6.02*10^23 as the answer to your ^ question? sorry don't get it even if that's what you're looking for

Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook