Question

The number of moles in 5.32 x1025 formula units of MgS is: A. 0.0113B. 2.58C. 32.0D. 88.4

Answer 1

1) Convert formula units into moles

Avogadro's number is 6.022*10^23

$\text{mol MgS}_{}=5.32\cdot10^{25}formulaunits\cdot\frac{1\text{ mol}}{6.022\cdot10^{23}\text{ formula units}}=88.34\text{ mol MgS}$

88.34 mol MgS