## Chemistry: Principles and Practice (3rd Edition)

To get the molecular mass, multiply the atomic mass of each element by the number of its atoms and add them together. Molecular mass of aspartame ($C_{14}H_{18}N_{2}O_{5}$) = (14$\times$ atomic mass of carbon) + (18$\times$atomic mass of hydrogen) + (2$\times$atomic mass of nitrogen) + (5$\times$atomic mass of oxygen) = $(14\times12.011) + (18\times1.008) + (2\times14.007) + (5\times15.999)$ = 294.307 u