(Answered) Environmental engineeringquestion 4 the wastewater from a

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Environmental engineering

Question 4: The wastewater from a restaurant contains organic matter with a theoretical oxygen demand of 2500 mg/L. If the average composition of the organic constituents in the water is C₁₅H₃₂O₁₂, estimate the concentration of dissolved organic carbon (DOC) in the water.

Question 5: Neutral ammonia (NH₃) is far more toxic to fish than ammonium ion (NH₄⁺) is. If a solution contains 10^-4 M NH₄⁺, what is the acceptable pH range for keeping the NH3 concentration less than 10^-6M?

Question 6: A solution contains 3 x 10^-4 M H₂CO₃ and 1.5 x 10_-3 M HCO₃^-. How much CO₃^2- is in the solution?

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