Sulfide in a water sample is titrated with electrolytically…

Sulfide in a water sample is titrated with electrolytically generated Fe2+. If a 10.00-mL aliquot of the water sample requires a current of 0.750 A for 5.40 min to reach the end point, what is the molar concentration of sulfide in the water sample? (Report to 3 decimal places)