# How would you place these in order of greatest mass at the bottom and least mass at the top?

A $6 \cdot m o l$ quantity of ${N}_{2}$ has a mass of $6 \cdot \cancel{m o l} \times 2 \times 14.01 \cdot g \cdot \cancel{m o {l}^{-} 1} = 168.1 \cdot g$.........