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A flow of 1.4 MGD is treated with sodium silicofluoride (Na2SiF6) to provide a fluorideion dose of 1.3 mg/L. what is the feed rate in pounds per day? Commercial sodium silicofluoride has a purity of 98.5 percent and the fluoride ion purity as sodium silicofluoride is 60.7 percent.
The physician has ordered 1.00 g of tetracycline to be given every 6 hours to a patient. If your stock on hand is 500 mg tablets, how many will you need for 1 day's treatment
Combustion of C12H22O11(s)(sucrose or "table sugar") produces CO2(g)and H2O(l). When 3.76 g of sucrose is combusted in a constant volume (bomb) calorimeter, 62.0 kJ of heat is liberated. Calculate ΔE for the combustion of 2.30g of sucrose.
2.0 mL ethanol with 1.0 mL ethylene glycol (HOCH2CH2OH) calculate the theoretical vapor pressure at room temperature for the solution above. using raoults law
a water soluble salt forms a precipitant during Group 3 analysis. An acidic solution of this precipitant and NaBiO3 yields a pinkish color. This same salt has no reaction to concentrated H2SO4 or AgNO3, what is the chemical formula for this salt?
The solubility constant of TlBr is Ksp = 3.6 × 10^-6 and the solubility constant of AgBr is Ksp = 5.0 × 10^-13. Determine the range of NaBr volumes over which each solid precipitates.
Calculate the change in entropy when one mole of ice at ?10.0°C and 1 atm is converted to liquid water at ?5.0°C and 1 atm
Suppose you wished to control the PO43- concentration in a solution of phosphoric acid by controlling the pH of the solution. If you assume you know the H3PO4 concentration, what combined equation would be useful for that purpose? Include physical..
an industrial process makes calcium oxide by decomposing calcium carbonate. which of the following is not needed to
The Atomic Mass of carbon is found to be 12.011 amu. A Molecular Mass is the sum of the (averaged) Atomic Masses for all atoms in a molecule. What is the Molecular Mass of H2SeO3
if .158g of baruim halide is completely precipitated with H2SO4 and .124g of BaSO4 is collected,what is the formula of the barium halide?
Explain what is the pressure in a 14.5 L cylinder filled with 0.440mol of nitrogen gas at a temperature of 315K
A 1 L buffer solution is .050 M HC2H3O2 as well as .250 M LiC2H3O2. Which of the subsequent actions will destroy the buffer. Adding .05 mol of
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