Stoichiometry: Calculations with Chemical Formulas and Equations

 

32) (a) MM (C14H18N2O5) = 14 mol C * 12.01 g C/1 mol C + 18 mol H * 1.01 g H/1 mol H + 2 mol N * 14.01 g N/1 mol N + 5 mol O * 16.00 g /1 mol O = 294.34 g mol-1

           

      (b) n = 1.00 mg C14H18N2O5 * 1 g/103 mg * 1 mol C14H18N2O5/294.34 g C14H18N2O5 = 3.40 x 10-6 mol C14H18N2O5

           

      (c) N = 3.40 x 10-6 mol C14H18N2O5 * 6.02 x 1023 C14H18N2O5 molecules/1 mol C14H18N2O5 = 2.05 x 1018 C14H18N2O5 molecules

 

      (d) N = 2.05 x 1018 C14H18N2O5 molecules * 18 H atoms/ 1 C14H18N2O5 molecule = 3.68 x 1019 H atoms