# Question #206cb

$1.9571958 \times {10}^{24} \text{atoms}$
1mole of any substance has $6.022140857 \times {10}^{23}$ atoms .
$3.25 \times 6.022140857 \times {10}^{23} = 1.9571958 \times {10}^{24} \text{atoms}$