Estimate the number of atoms in a grain of sand. Assume the grain is a
0.25mm (on each side) cube and that average distance between atoms is
10^-10m.


Please help me answer this question I have a lot of trouble solving it. Can u show the steps too. Thank you sooo much.

Here, check this out:
http://www.madsci.org/posts/archives/oct2000/971706798.Ph.r.html

Thanks a lot RickJ. Very fast explanation of the problem. Thanks again for helping.