3. An important conversion factor that you must memorize and use in this course is: 1 mg/L = 8.34 lb/million gallons a) Start with a value of 1 mg/L and use dimensional analysis to prove that this conversion factor is correct: Show that 1 mg/L = 8.34 lb/million gal. b) A wastewater treatment plant adds 5 mg/L of a commercial polymer to raw water to enhance removal of colloidal particles during settling. If the flow rate of water into the facility is 100 MGD, how many pounds of polymer are needed each year? (hint, use the required conversion factor 1 mg/L = 8.34 lb/million gallon to perform the calculation)

3. An important conversion factor that you must memorize and use in this course is: 1 mg/L = 8.34 lb/million gallons a) Start with a value of 1 mg/L and use dimensional analysis to prove that this conversion factor is correct: Show that 1 mg/L = 8.34 lb/million gal. b) A wastewater treatment plant adds 5 mg/L of a commercial polymer to raw water to enhance removal of colloidal particles during settling. If the flow rate of water into the facility is 100 MGD, how many pounds of polymer are needed each year? (hint, use the required conversion factor 1 mg/L = 8.34 lb/million gallon to perform the calculation)

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter10: Properties Of Solutions

Section: Chapter Questions

Problem 5ALQ: You have read that adding a solute to a solvent can both increase the boiling point and decrease the...

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Similar questions

Distinguish between dispersion methods and condensation methods for preparing colloidal systems.
You have read that adding a solute to a solvent can both increase the boiling point and decrease the freezing point. A friend of yours explains it to you like this: The solute and solvent can be like salt in water. The salt gets in the way of freezing in that it blocks the water molecules from joining together. The salt acts like a strong bond holding the water molecules together so that it is harder to boil. What do you say to your friend?
The specific gravity of a solution of KCl is greater than 1.00. The specific gravity of a solution of NH3 is less than 1.00. Is specific gravity a colligative property? Why, or why not?
A patient has a “cholesterol count” of 214. Like manyblood-chemistry measurements,this result is measured inunits of milligrams per deciliter (mgdL1). Determine the molar concentration of cholesterol inthis patient’s blood, taking the molar mass of cholesterolto be 386.64gmol1. Estimate the molality of cholesterol in the patient’sblood. If 214 is a typical cholesterol reading among men inthe United States, determine the volume of such bloodrequired to furnish 8.10 g of cholesterol.
Sodium chloride (NaCl) is commonly used to melt ice on roads during the winter. Calcium chloride (CaCl2) is sometimes used for this purpose too. Let us compare the effectiveness of equal masses of these two compounds in lowering the freezing point of water, by calculating the freezing point depression of solutions containing 200. g of each salt in 1.00 kg of water. (An advantage of CaCl2 is that it acts more quickly because it is hygroscopic, that is. it absorbs moisture from the air to give a solution and begin the process. A disadvantage is that this compound is more costly.)