Question

What is the number of formula units in a 9.96 mol sample of NH NOZ? formula units

Answer 1

Formula units is defined as lowest whole number ratio of ions in an ionic compound. It is calculate by multiplying the number of moles by Avogadro's number which is $6.022\times 10^{23}$$10^{23}$

moles of amonium nitrate (NH4NO3)=

No. of formula unit =
9,96 %
  $6.022\times 10^{23}$

=  
59,98
$10^{23}$