Chemistry Stoichiometry with a Twist..confused

Question

Aspartame has a molecular formula of C14H18N2O5. Find the atoms of nitrogen in 1.2grams of aspartame.

Answer 1

find the number of molecules in 1.2 garms of aspartame using avadgodro's sumber

then, use the conversion factor: 1 molecule of aspartame=the number of nitrogen atoms in this molecule (which in this case is 2)

so,

# of molecules of aspartame * 2 nitrogen atoms/1 molecule of aspartame

, will yeild u the # of nitrogen atoms u have

hope that helped!!

Answer 2

1.2gAsp * (1 mol asp/ molarmass of asp) * (2 mol nitrogen/1mol asp) * (6.02e23 atoms nitrogen/1 mol nitrogen) = answer

asp = aspartame

6.02e23 = 6.02 *10^23

i'm supposing you know how to find the molar mass right?