1. Many important metals occur as sulfide, arsenide, and antimonide minerals, especially in the Sudbury mineral complex. The first step in processing these ores involves "roasting" the ore in air to produce the metal or metal oxide, along with nonmetal oxides that can be serious pollutants if not trapped. Suppose that you roast 1.00kg of the mineral shandite, Ni3Pb2S2. The balanced equation for the reaction is: 2Ni3Pb2S2+9O26NiO+4PbO+4SO2 (a) How many kg of NiO can be produced? (b) How many kg of the pollutant PbO can be produced? (c) How many liters of air at 25C are required for roasting? Assume that air contains 23%O2 by mass, and that the density of air at 25C is 1.2g/L. Molar masses: Ni3Pb2S2654.6g/molNiO74.69g/molPbO223.20g/mol