Consider the following unbalanced equation:
Li2S(aq) + Bi(NO3)3(aq) → LiNO3(aq) + Bi2S3(s)
If 20.5 moles of Li2S(aq) reacts with an excess of Bi(NO3)3(aq), what is the theoretical yield of LiNO3(aq) in moles?