# What is the molar mass of Li_2SO_4?

The atomic mass of lithium is $6.94 \cdot g \cdot m o {l}^{-} 1$; that of sulfur is $32.06 \cdot g \cdot m o {l}^{-} 1$, and oxygen $15.999 \cdot g \cdot m o {l}^{-} 1$. Can you sum them appropriately to give the molar mass?