# Question #ff8b4

Sep 8, 2017

$4.5665 \cdot {10}^{-} 5$ moles

#### Explanation:

Your working out doesn't seem to make sense. This is not a difficult problem, if you just calculate the number of protons, then convert the amount to moles.

There are $11$ protons in a sodium atom, so the are $2.50$ x ${10}^{18}$ x $11$ protons altogether: $2.75$ x ${10}^{19}$ protons.

Number of moles: $\frac{2.75 \cdot {10}^{19}}{6.022 \cdot {10}^{23}}$

$4.5665 \cdot {10}^{-} 5$ moles