Exam 8: Mixtures, Solution Concentrations, and Diffusion

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The permissible level of arsenic in drinking water is 10 ppb in the United States.What is the maximum mass of arsenic, in grams, allowable in 1 L of drinking water?

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Which container would be the best for preparing 1 L of a 10 g NaCl/L solution? In other words, which container will give the most accurate and precise measure of a large volume?

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Red blood cells are placed into three solutions, each solution a different concentration of NaCl.One solution is isotonic, one is hypotonic, and one is hypertonic with red blood cells.In which solution have the blood cells undergone crenation? Red blood cells are placed into three solutions, each solution a different concentration of NaCl.One solution is isotonic, one is hypotonic, and one is hypertonic with red blood cells.In which solution have the blood cells undergone crenation?

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A patient is given 15 mL of a liquid pain reliever as a suspension containing 220 mg/5 mL of the pain reliever.How many milligrams of the pain reliever did the patient receive?

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Which compound passes MOST easily through the cell membrane?

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Consider solutions A and B separated by a semipermeable membrane.After osmosis occurs, A is ______ and B is ______. Consider solutions A and B separated by a semipermeable membrane.After osmosis occurs, A is ______ and B is ______.

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A student heats water and carefully dissolves a solute and then leaves the transparent solution on the lab bench.Later, she comes back to find that her solution is cloudy and has small solid particles in it.What happened?

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Tegretol is used as an anticonvulsant and mood-stabilizing drug.An order is given to administer 150.mg as needed.The medicine is available as a 20 mg/mL solution.How many milliliters of the Tegretol solution should be administered to the patient?

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An order is given to administer 100.mg of furosemide, a diuretic, over the course of four hours by IV.If a 500.mL bag contains 200.mg of furosemide, what flow rate, in milliliters per hour, should be administered to the patient?

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An electrolyte is a substance that

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Sugar is stirred into cold iced tea and only some dissolves.The rest remains a solid.This solution is

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Which of the following usually occurs when a molecule dissolves in water?

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Jane Doe's blood test showed that her iron is 125 mg/dL.You would like to convert the value into units of grams per liter, g/L.Which unit conversion converts 125 mg/dL into g/L?

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In a solution, the component present in a larger amount is called the

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The function of a kidney is similar to which part of the diagram below? The function of a kidney is similar to which part of the diagram below?

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Convert 0.015 M Ca2+ to equivalents of Ca2+.

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A child is given 7.5 mL of a liquid pain reliever as a suspension containing 160 mg/5 mL of the pain reliever.How many milligrams of the pain reliever did the child receive?

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Pepto-Bismol, the liquid, pink antacid that must be shaken thoroughly before administering, is a

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A researcher needs 800 mL of a 25 mM phosphate buffer.The stock solution of the buffer is 100 mM.How much stock solution should be used to make the 25 mM phosphate buffer?

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Consider solutions A and B separated by a semipermeable membrane.Which diagram BEST illustrates what the volumes should look like after osmosis occurs? Consider solutions A and B separated by a semipermeable membrane.Which diagram BEST illustrates what the volumes should look like after osmosis occurs?

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