Chemistry: Principles and Reactions
8th Edition
ISBN: 9781305079373
Author: William L. Masterton, Cecile N. Hurley
Publisher: Cengage Learning
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Chapter 10, Problem 46QAP
Epinephrine (or adrenaline) is a hormone and neurotransmitter. It participates in the fight-or-flight response of the sympathetic nervous system. An aqueous solution of epinephrine is prepared by dissolving 0.250 g of the hormone in enough water to make 0.350 L of solution. The solution has an osmotic pressure of 71.8 mm Hg at 22°C. What is the molar mass of epinephrine?
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Chapter 10 Solutions
Chemistry: Principles and Reactions
Ch. 10 - A solution is prepared by dissolving 12.15 g of...Ch. 10 - Prob. 2QAPCh. 10 - Prob. 3QAPCh. 10 - Solutions Introduced directly into the bloodstream...Ch. 10 - Silver ions can be found in some of the city water...Ch. 10 - Prob. 6QAPCh. 10 - Complete the following table for aqueous solutions...Ch. 10 - Complete the following table for aqueous solutions...Ch. 10 - Complete the following table for aqueous solutions...Ch. 10 - Complete the following table for aqueous solutions...
Ch. 10 - Prob. 11QAPCh. 10 - Prob. 12QAPCh. 10 - Prob. 13QAPCh. 10 - A solution is prepared by diluting 0.7850 L of...Ch. 10 - A bottle of phosphoric acid is labeled 85.0% H3PO4...Ch. 10 - Prob. 16QAPCh. 10 - Complete the following table for aqueous solutions...Ch. 10 - Complete the following table for aqueous solutions...Ch. 10 - Assume that 30 L of maple sap yields one kilogram...Ch. 10 - Juice (d=1.0g/mL) from freshly harvested grapes...Ch. 10 - Prob. 21QAPCh. 10 - Which of the following is more likely to be...Ch. 10 - Prob. 23QAPCh. 10 - Prob. 24QAPCh. 10 - Consider the process by which lead chloride...Ch. 10 - Prob. 26QAPCh. 10 - The Henry's law constant for the solubility of...Ch. 10 - The Henry's law constant for the solubility of...Ch. 10 - A carbonated beverage is made by saturating water...Ch. 10 - Air contains 78% nitrogen. At 25C, Henry's law...Ch. 10 - Vodka is advertised to be 80 proof. That means...Ch. 10 - What is the freezing point of maple syrup (66%...Ch. 10 - Calculate the vapor pressure of water over each of...Ch. 10 - Calculate the vapor pressure of water over each of...Ch. 10 - Prob. 35QAPCh. 10 - Consider an aqueous solution of urea, (CO(NH2)2)...Ch. 10 - Prob. 37QAPCh. 10 - Prob. 38QAPCh. 10 - Calculate the freezing point and normal boiling...Ch. 10 - How many grams of the following nonelectrolytes...Ch. 10 - What is the freezing point and normal boiling...Ch. 10 - Antifreeze solutions are aqueous solutions of...Ch. 10 - When 13.66 g of lactic acid, C3H6O3, are mixed...Ch. 10 - A solution consisting of 4.50 g of propylene...Ch. 10 - Insulin is a hormone responsible for the...Ch. 10 - Epinephrine (or adrenaline) is a hormone and...Ch. 10 - Lauryl alcohol is obtained from the coconut and is...Ch. 10 - The Rast method uses camphor (C10H16O) as a...Ch. 10 - Caffeine is made up of 49.5% C, 5.2% H, 16.5% O,...Ch. 10 - A compound contains 42.9% C, 2.4% H, 16.6% N, and...Ch. 10 - A biochemist isolates a new protein and determines...Ch. 10 - Prob. 52QAPCh. 10 - Estimate the freezing and boiling points of normal...Ch. 10 - Arrange 0.10 m aqueous solutions of the following...Ch. 10 - Aqueous solutions introduced into the stream y...Ch. 10 - What is the osmotic pressure of a 0.135 M solution...Ch. 10 - The freezing point of a 0.11 m solution of HNO2 is...Ch. 10 - The freezing point of a 0.21 m aqueous solution of...Ch. 10 - An aqueous solution of LiX is prepared by...Ch. 10 - An aqueous solution of M2O is prepared by...Ch. 10 - A sucrose (C12H22O11) solution that is 45.0%...Ch. 10 - An aqueous solution made up of 32.47 g of...Ch. 10 - How would you prepare 5.00 L of a solution that is...Ch. 10 - Carbon tetrachloride (CCl4) boils at 76.8C and has...Ch. 10 - Twenty-five milliliters of a solution...Ch. 10 - The Henry's law constant for the solubility of...Ch. 10 - Prob. 67QAPCh. 10 - Consider two solutions at a certain temperature....Ch. 10 - A pharmacist prepares an isotonic saline solution...Ch. 10 - One mole of CaCl2 is represented as where...Ch. 10 - One mole of Na2S is represented as where...Ch. 10 - Prob. 72QAPCh. 10 - Consider three test tubes. Tube A has pure water....Ch. 10 - The freezing point of 0.20 m HF is -0.38C. Is HF...Ch. 10 - A certain gaseous solute dissolves in water,...Ch. 10 - The freezing point of 0.10 M KHSO3 is -0.38C....Ch. 10 - Consider 2 vapor pressure curves A and B. They are...Ch. 10 - A gaseous solute dissolves in water. The solution...Ch. 10 - In your own words, explain (a) why seawater has a...Ch. 10 - Prob. 80QAPCh. 10 - Beaker A has 1.00 mol of chloroform, CHCl3, at...Ch. 10 - Prob. 82QAPCh. 10 - Prob. 83QAPCh. 10 - Prob. 84QAPCh. 10 - Prob. 85QAPCh. 10 - A martini, weighing about 5.0 oz (142 g), contains...Ch. 10 - When water is added to a mixture of aluminum metal...Ch. 10 - Prob. 88QAPCh. 10 - Prob. 89QAP
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- A 1.40-g sample of polyethylene, a common plastic, is dissolved in enough organic solvent to give 100.0 mL of solution. What is the average molar mass of the polymer if the measured osmotic pressure of the solution is 1.86 mm Hg at 25 C?arrow_forwardWater at 25 C has a density of 0.997 g/cm3. Calculate the molality and molarity of pure water at this temperature.arrow_forwardIn a police forensics lab, you examine a package that may contain heroin. However, you find the white powder is not pure heroin but a mixture of heroin (C12H23O5N) and lactose (C12H22O11). To determine the amount of heroin in the mixture, you dissolve 1.00 g of the white powdery mixture in water in a 100.0-mL volumetric flask. You find that the solution has an osmotic pressure of 539 mm Hg at 25 C. What is the composition of the mixture?arrow_forward
- What would be the freezing point of a solution formed by adding 1.0 mole of glucose (a molecular compound) to the following amounts of water? a. 250 g (0.25 kg) b. 500 g (0.500 kg) c. 1000 g (1.000 kg) d. 2000 g (2.000 kg)arrow_forwardCalculate the molality of a solution made by dissolving 115.0 g ethylene glycol, HOCH2CH2OH, in 500. mL water. The density of water at this temperature is 0.978 g/mL. Calculate the molarity of the solution.arrow_forwardConcentrated hydrochloric acid contains 1.00 mol HCl dissolved in 3.31 mol H2O. What is the mole fraction of HCl in concentrated hydrochloric acid? What is the molal concentration of HCl?arrow_forward
- A CaCl2 solution at 25C has an osmotic pressure of 16 atm and a density of 1.108 g/mL. What is the freezing point of this solution?arrow_forward6-111 As noted in Section 6-8C, the amount of external pressure that must be applied to a more concentrated solution to stop the passage of solvent molecules across a semipermeable membrane is known as the osmotic pressure The osmotic pressure obeys a law similar in form to the ideal gas law (discussed in Section 5-4), where Substituting for pressure and solving for osmotic pressures gives the following equation: RT MRT, where M is the concentration or molarity of the solution. (a) Determine the osmotic pressure at 25°C of a 0.0020 M sucrose (C12H22O11) solution. (b) Seawater contains 3.4 g of salts for every liter of solution. Assuming the solute consists entirely of NaCl (and complete dissociation of the NaCI salt), calculate the osmotic pressure of seawater at 25°C. (c) The average osmotic pressure of blood is 7.7 atm at 25°C. What concentration of glucose (C6H12O6) will be isotonic with blood? (d) Lysozyme is an enzyme that breaks bacterial cell walls. A solution containing 0.150 g of this enzyme in 210. mL of solution has an osmotic pressure of 0.953 torr at 25°C. What is the molar mass of lysozyme? (e) The osmotic pressure of an aqueous solution of a certain protein was measured in order to determine the protein's molar mass. The solution contained 3.50 mg of protein dissolved in sufficient water to form 5.00 mL of solution. The osmotic pressure of the solution at 25°C was found to be 1.54 torr. Calculate the molar mass of the protein.arrow_forwardConsider three test tubes. Tube A has pure water. Tube B has an aqueous 1.0 m solution of ethanol, C2H5OH. Tube C has an aqueous 1.0 m solution of NaCl. Which of the following statements are true? (Assume that for these solutions 1.0m=1.0M.) (a) The vapor pressure of the solvent over tube A is greater than the solvent pressure over tube B. (b) The freezing point of the solution in tube B is higher than the freezing point of the solution in tube A. (c) The freezing point of the solution in tube B is higher than the freezing point of the solution in tube C. (d) The boiling point of the solution in tube B is higher than the boiling point of the solution in tube C. (e) The osmotic pressure of the solution in tube B is greater than the osmotic pressure of the solution in tube C.arrow_forward
- Fructose, C6H12O6, is a sugar occurring in honey and fruits. The sweetest sugar, it is nearly twice as sweet as sucrose (cane or beet sugar). How much water should be added to 1.75 g of fructose to give a 0.125 m solution?arrow_forwardA 0.109 mol/kg aqueous solution of formic acid, HCOOH, freezes at −0.210 °C. Calculate the percent dissociation of formic acid.arrow_forwardFreezing point depression is one means of determining the molar mass of a compound. The freezing point depression constant of benzene is 5.12 C/m. a. When a 0.503 g sample of the white crystalline dimer is dissolved in 10.0 g benzene, the freezing point of benzene is decreased by 0542 C. Verify that the molar mass of the dimer is 475 g/mol when determined by freezing point depression. Assume no dissociation of the dimer occurs. b. The correct molar mass of the dimer is 487 g/mol. Explain why the dissociation equilibrium causes the freezing point depression calculation to yield a lower molar mass for the dimer.arrow_forward
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Solutions: Crash Course Chemistry #27; Author: Crash Course;https://www.youtube.com/watch?v=9h2f1Bjr0p4;License: Standard YouTube License, CC-BY