posted by lisa mendez on .
if 53.0mL of 0.150M of HCl is needed to neutralize all the NH3 from a 2.28g sample of organic material. what is the mass percent of notrogen in the sample?
NH3 HCl ==> NH4Cl
mols HCl = M x L = ?
mols NH3 must be the same as mols HCl.
mols N (not N2) = same as mols NH3.
g N = mols N x atomic mass N = ?
%N = (grams N/mass sample)*100 = ?