Lithium reacts with nitrogen gas according to the reaction:
$$
6 \mathrm{Li}(s)+\mathrm{N}_{2}(g) \rightarrow 2 \mathrm{Li}_{3} \mathrm{~N}(s)
$$
What mass of lithium (in g) reacts completely with $58.5 \mathrm{~mL}$ of $\mathrm{N}_{2}$ gas at $\mathrm{STP} ?$