PROBLEM 1) A number of analyses are conducted on a sample of the effluent of a WWTP known to only contain butyrate (CH(CH2)2C00) as organic matter COD source. The sample contains 5 mg org/L of organic nitrogen and a TKN of 55 mg/L A titration of the sample results in a partial alkalinity of 625 mgcacos/L. A TOC analysis of the sample shows 500 mg/L and the pH is 7.8. (pKanner=9.25; pace= 6.3) 1) Estimate how much free ammonia is present in the water sample (in mg nus/L) (10%) ii) Estimate how much total inorganic carbon is present in the sample (in mg/L) (10%) iii) Estimate the BOD concentration of the water sample (in mgcon/L) (ignore Norg) (10%)