**********I only need 3 and 4, please help!

A tracer study was conducted on a full-scale reactor that has a volume of 780,000 gallons by injecting a slug of chloride into the influent and then measuring the effluent concentration with time. Olo Time (minutes after dye was injected) 0.10 0.20 0.30 0.40 0.50 0.75 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 Chloride Concentration (mg/L) 0.0 5.0 5.5 6.0 6.6 7.4 8.6 9.4 10 11 12 13 14 15 5.0 6.0 7.0 8.0 9.0 10 11 12 13 14 15 16 17 18 19 20 25 36 43 45 46 45 44 21 9.8 8.7 7.3 6.2 5.6 4.7 4.1 3.0 1. Find the n value for this tank (assume all values have 2 significant figures). 2. The tank in problem 1 is to be used to treat an industrial wastewater containing 785 mg/L of soluble BODs. Regulations require that this soluble concentration be reduced to 251 mg/L BODs. The reaction is first order with a k' value of 1.45/day. What is the maximum flow rate that can be processed through the tank? 3. Determine the flow rate if the tank in question 1 was an ideal CSTR. 4. Determine the flow rate if the tank in question 1 was ideal plug flow