A gas stream is emitted from a stack at a coal fired power plant. The chemical composition of the gas stream by volume is 400 ppmv NO, 600 ppmv SO2, 2000 ppmv CO, 10.7% H2O, 6.0% O2, 10.0% CO2, and 73.0% N2. Determine the molar mass (average molecular weight) of the gas stream, and the mole and mass fractions for each species.