I have been given a set of questions as a pre-course task for my physics AS level and i would be very grateful if somone could check my working and tell me if i'm on the right track.(adsbygoogle = window.adsbygoogle || []).push({});

One of the questions is how many atoms (with a given diameter of 0.0000001mm) can you fit into a 1cm^3 space. To work this out i began by calculating the volume of a single atom using the formula 4/3 pi r^3.

The answer for this came to 5.235987756*10^-25. Following this i calculated that with 100% efficiency 1.90985932 × 10^24 atoms would fit into the space. Then using the Kepler conjecture which says that you can pack spheres into a cube with a maximum efficency of 74% took 74% of the previous value which came to 1.41329589 × 10^24 atoms.

Thanks in advance.

Paul

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# Homework Help: Number of atoms that fill fit into 1cm^3

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