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A sewage lagoon that has a surface area of 10 ha and a depth of 1 m recieving 8640m3*d-1 of sewage containing 100 mg*L-1 of biodegradable contaminant. At a steady state, the effluent from the lagoon must not exceed 20mg*L-1 of biodegradable contaminant. Assuming the lagoon is well mixed and that there are no losses or gains of waterin the lagoon other than the sewage input, what biodegradation reaction rate coefficient (d-1) must be achieved fo a first-order reaction?
a robust first grader goes for swimming lessons three times a week and he enjoys it thoroughly. during the first week
Define mole, molar mass and Avogadro's. What is the relationship to one another. Example and include an example
Diet coke Chemistry, You drink a 500 ml bottle of Diet Coke, which has 0 calories. The Diet Coke was chilled to 7 degrees C before you drank it. Approximately how much heat energy is drawn from your body to warm this 500 ml of Diet Coke up to your..
The average human body contains 5.00 L of blood with a Fe2+ concentration of 1.40x10^-5 M. If a person ingests 7.00mL of 11.00 mM NaCN, what percentage of iron(III) in the blood would be seperated by the cyanide ion
The conductivity of a solution can be measured easily with a probe that dips into a solution and a meter that reads out in siemens (1 siemens = 1 ohm-1). The equivalent conductance,
What is the limiting reactant when equal masses of iron(III) chloride and potassium phosphate react in solution?
The quantum yield for CO production in the photolysis of gaseous acetone is unity for wavelengths between 250 and 320 nanometers. After 20 minutes of irradiation at 313 nm, 18.4 cm cubed of CO
Expand to final volume at constant pressure and then adjust to final temperature by interaction with a heat bath.
What is the mole fraction of NaCl in this solution? what would be the vapor pressure of this solution at 45C? The vapor pressure of pure water is 23.8 torr at 25 C and 71.9 torr at 45C
first generation computers were powered by nickel cadium batteries which generated 1.20 V based on the following reaction Cd(s)+2 NiO(OH)(s)+2 H2O(l)-> Cd(OH)(s)+2 Ni(OH)2(s)
Calculate the mass of propylene glycolC3H8O2 that must be added to 0.320kg of water to reduce the vapor pressure by 2.88torr at 40C Pressure H2O 40C 55.3torr
it is found that 1.431g of element x ciontains 7.509 *10^21 atoms. calculate the atomic mass of x
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