Based on the equation 4 Ag(s) + 2 H2S(g) —> 2 Ag2S(s) + 2 H2O(i) what is the mole ratio of H2S(g) to Ag2S(s)

The mole ratio of H2S(g) to Ag2S(s) is 2:2, or simplified, 1:1. This means that for every 2 moles of H2S that reacts, 2 moles of Ag2S are produced.