(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

This is from a worksheet. I had to find the volume myself

"A large number of spheres are poured into a graduated cylinder and gently vibrated until the occupy a minimum volume of 40 mL (or 40 cm^3). Use the information about close packing and the data you found to find the number of spheres in the cylinder. "

I found -- volume = 0.0477 cm^3

diameter = 4.5 mm

Given -- close packing fraction = .74048

2. Relevant equations

Wasn't given one but I used (minimum volume) / (volume of a sphere)

3. The attempt at a solution

40 cm^3 / 0.0477 cm^3 = 839 spheres

I'm not sure if I did was right. I don't know what I'm supposed to do with the information about the close packing fraction. I can't find it in my book.

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# Homework Help: Finding the number of spheres in a graduated cylinder

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