Question

How many copper atoms in a mass of `0.595*g` of copper?

Answer 1

Avogadro's number of copper atoms has a MASS of `63.55` `g`. If you didn't know that, then where would we find it?

Explanation:

If we write `N_A` `=` `6.022xx10^(23)` `mol^-1`. Then we can estimate the number of copper atoms based on the MASS of the copper atoms.

So we need the proportion of `1` `"mole"` that `0.595` `g` represents.

`(0.595*g)/(63.55*g*mol^-1)` `=` `??` `mol`.

You then multiply this number by `N_A` to get the NUMBER of copper atoms.