Answer to Question #269931 in General Chemistry for Renz

Question

The artificial sweetener aspartame formula C14H18N2O5 is used to sweeten foods. How many moles of aspartame are present in 225 g of aspartame.

Answer 1

  Let's calculate the molar mass of aspartame by starting with looking up the atomic weights of the involved elements:

 Atomic weight carbon = 12.0107

 Atomic weight hydrogen = 1.00794

Atomic weight nitrogen = 14.0067

 Atomic weight oxygen = 15.999

  

Molar mass aspartame = 14 ×12.0107 + 18 × 1.00794 + 2 ×14.0067 + 5 × 15.999

=294.30112 g/mol

  Moles aspartame = 225 g / 294.30112 g/mol = 0.764523084 mol

  Rounding to 3 significant figures gives

=0.765 moles.