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Question
A wastewater treatment plant with a flow rate of 100,000 m3/d, produces 2,000 kg of biological solids daily. The wastewater does not have any nitrogen in the influent. How much NH4+-N needs to be supplied daily? Also, express the nitrogen as a concertation in the influent (as mg of NH4+-N/l).
The Reaction A->B+C is second order in A. When [A]0=0.100 M, the reaction is 20% complete in 53.7 minutes. calculate the value of the rate constant( in L/min mol)
Problem- At what temperature is the reduction of tungsten oxide by hydrogen to give metallic tungsten and steam spontaneous. The standard heat of formation of WO3(s) is -843kJ/mol and its standard molar entropy is 76 J/ (K*mol).
What is the pH of a solution that is 0.30 M in aniline, C6H5NH2, and 0.15 M in anilinium chloride, C6H5NH3+Cl-? (Kb = 4.2 × 10-10 for aniline) Aniline ionizes as: C6H5NH2 + H2O C6H5NH3+ + OH-
The reaction above took place and 3.25 liters of oxygen gas were collected over water at a temperature of 27*C and a pressure of 765 milimeters of mercury. The vapor pressure of water at 27*C is 30.0mm of mercury. What is the partial pressure of t..
Aluminum oxide, Al2O3 (molar mass = 101.96), occurs in nature as a mineral called corundum which is noted for its hardness and resistance to attack by acids. Its density is 3.97 g/cm3. Calculate the number of atoms of aluminum in 15.00 cm3 of coru..
Calculate te theoretical quantities of thionyl chloride and sodium borohydride needed to convert benzoin to E-stilbene.
At what rate does it take argon gas to diffuse through the same barrier if the temperature is the same?
Methane and hydrogen sulfide form when hydrogen reacts with carbon disulfide. Identify the excess reagant and calucate how much remains after 36 L of H2 reacts with 12 L of CS2.
A student dissolves 1.50g of copper(II) nitrate in water. After adding aqueous sodium carbonate solution which contains 1.80g of sodium carbonate, the student obtains 0.875g of CuCO3 precipitate.
What is the percent purity of NaHCO3 in your baking soda? (The formula weight of NaHCO3 is 84.007 g/mole).
Why is it necessary to use relatively exotic reagents to form precipitates with the Lithium group ions
A sample of nitrogen gas was collected over water at 20 degrees celsius and a total pressure of 1.00 atm. A total volume of 2.50 x 10^1 mL was collected. What mass of nitrogen was collected
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