To obtain pure lead, lead sulfide is burned in an atmosphere of pure oxygen. The products of the reaction are lad and sulfur trioxide. Write a balanced chemical equation for this process. How many grams of lead will be produced if 2.54 grams of PbS is burned with 1.88 g of O2? Express your answer to the correct number of significant figures. Be sure to show all steps completed to arrive at the answer. Be sure to work the problem with both PbS and O2.