Problem 5. The Table below shows all nitrogen and sulfur species along with their concentrations presented in a domestic wastewater. a) Calculate total mass concentration of nitrogen as mg/L in wastewater sample. (4p) b) Calculate total mass concentration of sulfur asmg/L in wastewater sample. (4p) c) Estimate the mass concentration of nitrite as ppb. (4p) d) Estimate the mole fraction and percentage of sulfate with considering only sulfur species. (4p) e) Estimate mass fraction and percentage of nitrate-nitrogen (NO3N) with considering only nitrogen species. (4p) Molecular weights (g/mole):N=14,S=32,O=16,H=1