How many hydrogen atoms are present in 5.00 mg of aspartame?

The chemical formula for Aspartame is C14H18N2O5. The molar weight is 294.3 grams/mol, so there are .00001699 moles of aspartame. Using Avogadro's number, there are 1.023 E19 molecules, each containing 18 hydrogen atoms. So there are 1.842 E20 atoms of hydrogen.