Calculate the Average Atomic Mass of Lithium Using the Following

question 168

Multiple Choice

Calculate the average atomic mass of lithium using the following data: $\begin{array}{|l|l|l|}\hline \text { Isotope } & \text { Abundance } & \text { Mass } \\\hline ^{6} \mathrm{Li} & 7.5 \% & 6.0151~ \mathrm{amu} \\\hline ^7 \mathrm{Li} & 92.5 \% & 7.0160 ~\mathrm{aum} \\\hline\end{array}$

• A) 6.51 amu
• B) 6.02 amu
• C) 6.94 amu
• D) 7.02 amu
• E) 6.50 amu