Question

What is the number of formula units in 23.8 g of sodium nitrate, NaNO3 ? Show work

Answer 1

Molar Mass of Sodium Nitrate =85g

$Number of moles =\frac {1mole ×23.8g}{85g}=0.271moles$

$N=0.271 ×6.02 ×10 ^{23}$

$N=1.631×10 ^{23}$