Question

How many molecules (or formula units) are in each sample? 74.41 g ( CCl4 )

Answer 1

Just find number of moles= weight/Molecular weight.
Then find moles * N where N is 6.022*10^23 or avogadro number.
moles=74.41/(12+4*35.5)=0.483.
Formula units= 0.483*6.022*10^23=3*10^23

Answer 2

The answer is N=2.913*10^23

Thanks :)

Answer 3

You're welcome :)