Sulfuric acid (h2so4) is prepared commercially from elemental sulfur using the contact process. in a typical sequence of reactions, the sulfur is first burned: s + o2 → so2 , then it is converted to so3 using a catalyst: 2 so2 + o2 → 2 so3 . the resulting so3 is reacted with water to produce the desired product: so3 + h2o → h2so4 . how much sulfuric acid could be prepared from 83 moles of sulfur? answer in units of g.