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Consider that a certain wastewater treatment plant returns 4.55 million gallons per day of treated water into a local stream, and that 2.2 mg of chlorine are added to each liter of treated water for e. coliremoval. Show your calculation of the mass of chlorine (in kg per day) that is used for this purpose.
what happens to the mass of an icecube when we melt it an open
a sample of oxygen is collected in a 206 ml container over water at 15c and the barometer reads 793 torr. what volume
Calculate the pH at the equivalence point in titrating 0.120 M solutions of each of the following with 8.0×10?2 M NaOH. -benzoic acid (C6H5COOH)
A scientist wants to make a solution of tribasic sodium phosphate, , for a laboratory experiment. How many grams of will be needed to produce 250 of a solution that has a concentration of ions of 0.700
What is the new boiling point of water if you add 188 grams of magnesium chloride to 1250 g of water.
Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. First what is the initial pH (before any NaOH is added)? The Ka for HOCl is 3.0 x 10-8 M.
The second virial coefficient B and the third virial coefficient C for A are -0.021 L/mol and 0.0012 L^2/mol^2 at 273 K respectively. By what percentage does the compressibility change
A hot tub is filled with 470 gallons of water, which has a density of 1.0. How many kilocalories are needed to heat the water from 67 to 109?
element z has two isotopes: one has mass number of 19.0 amu is 55.0% abundant,and the isotope with mass number 21.0 amu is 45.0% abundant. what is the average atomic mass for element Z?
A solution is made by mixing equal masses of methanol, CH4O, and ethanol, C2H6O. Determine the mole fraction of each component
if you are limited to two significant figures in your determination of the molar mass, what could you do to increase the precision of the experiment to 3 sig fig. What consequences would this have
Determine how much heat is evolved or absorbed when 25.0 of lithium iodide completely dissolves in water. Lithium iodide has a lattice energy of -7.3 X 10^2 kJ/mol and a heat of hydration of -793 kJ/mol.
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