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A water storage tank in a distribution system is filled at a rate of 300 m3/h. The chlorine concentration of the water entering the tank from the treatment plant is 6 mg/L. Chlorine reactions with organic and inorganic constituents are first order with respect to chlorine and the average rate constant is 0.004 h-1. Find the chlorine concentrations at:
--The end of filling the storage tank if the volume at the beginning of the fill period is 200 m3
--The end of the next storage period of of 10 h (assume no withdrawal)
--As a function of time during withdrawal from the storage tank if the rate of withdrawal is 500 m3/h.
A hydrated form of copper sulfate (CuSO4·x H2O) is heated to drive off all the water. If we start with 9.47 g of hydrated salt and have 5.29 g of anhydrous CuSO4
Write an equation for the Diels- Alder reaction of cyclopentadiene and 1,4 benzoquinone.
briefly describe your synthetic strategy. you may use any reagents of your choice. if any reagent you wish to use is unstable and has a small shelf-life
Calculate Pt, in atm, for three different gases at partial pressure of 144cm, 800mm, and 1.3m of Hg.
In addition, 2.157 ml of H2O (density = 0.997 g/mol) were also collected. What are the % weight of C, H and O in the sample, the empirical formula and the molecular formula.
If a second experiment is done with half as much H2O2 as the experiment in question 1, and the solution turns blue in 180 seconds, what is the order of the reaction with respect to H2O2?
Aspirin C9H8O4 is a weak monoprotic acid. To determine its acid-dissociation constant, a student dissolved 2.00 g of aspirin in 0.600 L of water and measured the pH. What was the Ka value calculated by the student if the pH of the solution was 2.6..
When X rays of wavelength 0.093 nm are diffracted by a metallic crystal, the angle of first-order diffraction (n = 1) is measured to be 15.2 degrees;. What is the distance between the layers of atoms responsible for the diffraction?
How many moles of chloroform, CHCl3, are required to fill a 253-mL flask at 100.0°C and 940 torr?
A sample of nitrogen gas is contained in a piston with a freely moving cylinder. At0?C, the volume of the gas is 248 mL. To what temperature must the gas be heated to occupy a volume of 479mL.
An acid HA has Ka = 2.28 x 10 -4. The % ionisation of this acid in a 0.170 M solution of the acid in water is closest to
Which of the possible unknowns for this experiment would give this behavior. Write a balanced equation for the reaction observed between this compound and BaCl2.
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