# A quarter is composed of 4.50 moles of nickel. How many atoms of nickel does this equal?

Jan 28, 2016

$1$ $\text{mole}$ of nickel has a mass of $58.69$ $g$.

#### Explanation:

Clearly, $4.50$ $\text{moles}$ of $N i$ has a mass of $4.50$ $m o l$ $\times 58.69 \cdot g \cdot m o {l}^{-} 1$, which is approx. $270$ $g$. If you are talking about American currency, I am pretty sure that nickels (and dimes and quarters) are not so massive.

It is a fact that if there are $1$ $\text{mol}$ of stuff, there are $6.022 \times {10}^{23}$ items of that stuff. So you do the arithmetic.