Question

What mass of lithium (in g) is required to react completely with 57.5mL of N2 gas at STP? Lithium reacts with nitrogen gas according to the following reaction:
6Li(s)+N2(g)→2Li3N(s)

Answer 1

mols N2 = 57.5/22,400 = ?
mols Li = 6x that (from the coefficients in the balanced equation).
Then g Li = mols Li x atomic mass Li = ?