Chemistry, 16.04.2021 04:10 taylord4230
. A pond receives urban runoff from a stormwater collection and equalization system. The system discharges water to the pond at a steady rate of 2 L/s. The stormwater contains two pollutants of interest: chloride (Cl- ) at a concentration of 500 mg/L and ammonium (NH4 ) at a concentration of 2 mg/L. Chloride is conservative, but ammonium degrades in the pond with a pseudo-first-order reaction rate constant of 0.05 day-1 . The pond also receives water (at a steady rate of Q) from a pristine stream with negligible concentrations of Cl- and NH4 . The pond is well-mixed and is equipped with an effluent weir that keeps its volume at a constant 10,000 m3 . The concentration of chloride in stream effluent stream is 100 mg/L. a. What is the concentration of NH4 (in mg/L) in this stream
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Chemistry, 22.06.2019 22:30
[ou.03jthe pictures below show the wavelengths and intensities of electromagnetic radiations emitted by three stars, star 1, star 2, and star 3. intensity intensity- intensity- 1000 3500 6000 8500 11000 wavelength (a) star 1 1000 3500 6000 8500 11000 1000 3500 6000 8500 11000 wavelength (a) wavelength (a) star 2 star 3 which of these statements is correct about the color of the three stars? star 2 is white in color o star 2 is yellow in color star 1 and star 3 are yellow in color star 1 and star 3 are white in color
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Chemistry, 22.06.2019 22:30
Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt
Answers: 1
. A pond receives urban runoff from a stormwater collection and equalization system. The system disc...
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