Silver sulfide, the tarnish on silverware, comes from the reaction of silver metal with hydrogen sulfide (H2S). The unbalanced equation is Ag + O2 → Ag2S + H2O. If the reaction was used intentionally to prepare Ag2S, how many grams would be formed from 496 g of Ag, 80.0 g of H2S, and excess O2 if the reaction takes place in 90% yield? (SHOW ALL WORK FOR FULL CREDIT - MUST USE DIMENSIONAL ANALYSIS TO SOLVE THE PROBLEM INCLUDE ALL UNITS AND SHOW ALL CANCELLATIONS FOR CREDIT.)