<|system|>
The magnitude of the electrostatic force between two identical ions that are separated by a distance of $5.0 \times 10^{-10} \mathrm{~m}$ is $3.7 \times 10^{-9}$ N.  What is the charge of each ion? </s>.
<|user|>
Can you answer based on context?
<|assistant|>
$3.2 \times 10^{-19} \mathrm{C}$