- #1

fernanhen

- 10

- 0

## Homework Statement

The mass of a copper atom is 5.30 10-25 kg, and the density of copper is 8 920 kg/m3 .

(a) Determine the number of atoms in 1 cm3 of copper.

_______Cu—atom/cm3

(b) Visualize the one cubic centimeter as formed by stacking up identical cubes, with one copper atom at the center of each. Determine the volume of each cube.

_______cm3/Cu—atom

(c) Find the edge dimension of each cube, which represents an estimate for the spacing between atoms.

_________cm

## Homework Equations

Density=mass/Volume

## The Attempt at a Solution

Well, the book the book we are using for this class "Physics for Scientists and Engineers" by Serway has no right being used in an Introductory Physics class.

I re-read the relevant chapter THREE times and still haven't figured out how to solve this.

Therefore, I used my intuition alone.

Using the info I have:

3.06*10^(-25)kg= (8,920kg/m^3)*1cm^3 = M=D*V

I cancelled the volumes but that won't left over any missing variables.

I googled for alternatives and my textbook absolutely does not point us in any direction regarding this question. Please help.

Thanks in advance.