lrn/takeAssignment/takeCovalentActivity.do?locator=assignment-take$4[Review Topics][References)Use the References to access important values if needed for this question.If an aqueous solution is 4.99% (w/v) in magnesium bromide, MgBr₂, what is the osmolarity of the solution?Osmolarity =osmol/LRSubmit AnswerDODF4%5TRetry Entire Group 7 more group attempts remainingF5Cengage Learning Cengage Technical Support610^-9.33 - Google SearchMacBook Air.F6Y&7anF7Ü8DIIF8+9F90F10P☐Previous Next>Save and BF12

Osmolarity= molarity× n Where n = number of particles of solute dissociate

activity.do?locator=assignment-take [Review Topics] [References] Use the References to access important values if needed for this question. If an aqueous solution is 4.99% (w/v) in magnesium bromide, MgBr2, what is the osmolarity of the solution? Osmolarity = osmol/L Submit Answer Retry Entire Group 7 more group attempts remaining O

activity.do?locator=assignment-take [Review Topics] [References] Use the References to access important values if needed for this question. If an aqueous solution is 4.99% (w/v) in magnesium bromide, MgBr2, what is the osmolarity of the solution? Osmolarity = osmol/L Submit Answer Retry Entire Group 7 more group attempts remaining O

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter13: Solutions And Their Behavior

Section: Chapter Questions

Problem 107SCQ

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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.)
Specifications for lactated Ringers solution, which is used for intravenous (IV) injections, are as follows to reach 100. mL of solution: 285315 mg Na+ 14.117.3 mg K+ 4.9Q.O mg Ca2+ 368408 mg Cl 231261 mg lactate, C3H5O3 a. Specify the amount of NaCl, KCl, CaCl2 2H2O, and NaC3H5O3 needed to prepare 100. mL lactated Ringers solution. b. What is the range of the osmotic pressure of the solution at 37C, given the preceding specifications?
The Henry's law constant for the solubility of argon gas in water is 1.0103M/atm at 30C. (a) Express the constant in M/mm Hg. (b) If the partial pressure of argon gas at 30C is 693 mm Hg, what is the concentration (in M) of the dissolved argon gas at 30C? (c) How many grams of argon gas can be dissolved in 29 L of water at 693 mm Hg and 30C? (Ignore the partial pressure of water.)
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?
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Water at 25 C has a density of 0.997 g/cm3. Calculate the molality and molarity of pure water at this temperature.
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