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18. Four aqueous solutions are prepared by dissolving 10 g of each of the following solutes...
a. Consider these two solutions: Solution A is prepared by dissolving 5.00 g of MgCl2 in...
a. Consider these two solutions: Solution A is prepared by dissolving 5.00 g of MgCl2 in enough water to make .250 L of solutions, and Solution B is prepared by dissolving 5.00 g of KCl in enough water to make .250 L of solution. Which direction will solvent initally flow if these two solutions are seperated by a semipermeable membrane? b. Assuming that the volumes of the solutions described in question 4 are additive and igoring any effects that gravity...
22. A solution is prepared by dissolving 6.00 g of an unknown nonelectrolyte in enough water...
22. A solution is prepared by dissolving 6.00 g of an unknown nonelectrolyte in enough water to make 1.00 L of solution. The osmotic pressure of this solution is 0.750 atm at 25.0°C. What is the molecular weight of the unknown solute (R - 0.0821 L'atm/K mol)?
What is the molarity (moles per Liter) of an aqueous solution that is prepared by dissolving...
What is the molarity (moles per Liter) of an aqueous solution that is prepared by dissolving 41.5 g of potassium iodide (KI; Molar Mass = 166.0 g/mole) in enough water to make 2,500.0 mL of solution? (5 points]
17. A solution is prepared by dissolving 5.00 g of aspirin, C9H3O4, in 215 g of...
17. A solution is prepared by dissolving 5.00 g of aspirin, C9H3O4, in 215 g of chloroform, has a boiling point that is elevated by AT = 0.47 °C over that of pure chloroform. What is the value of the boiling point elevation constant for chloroform? 18. What osmotic pressure in atmospheres would you expect for each of the following solutions? a) 5.00 g of NaCl in 350.0 mL of aqueous solution at 50 °C
I do not know even the formula for this problem A solution is prepared by dissolving...
I do not know even the formula for this problem
A solution is prepared by dissolving 6.00 g of an unknown nonelectrolyte in enough water to make 1.00 L of solution. The osmotic pressure of this solution is 0.750 atm at 25.0 degree C. What is the molecular weight (g/mol) of the unknown solute?
(b) 150 mL of solution is prepared by dissolving 1.20 g of sodium c hloride, NaCI...
(b) 150 mL of solution is prepared by dissolving 1.20 g of sodium c hloride, NaCI in enough water at 30 C. Given osmotic pressure is 2.20X102 atm. Determine the average molar mass of the NaCI.
. 0.275 L of solution is prepared by dissolving 2.50 g of an unknown molecular compound...
. 0.275 L of solution is prepared by dissolving 2.50 g of an unknown molecular compound in enough water. The osmotic pressure of this solution is 1.98 atm at 27 °C. (R = 0.08206 L·atm/mol·K) a) Determine the molar mass of the molecular compound. (7 pts) b) If you need to prepare 0.275 L of AlCl3 solution with the same osmotic pressure of the above solution, what mass of AlCl3 (MW = 133.33 g/mol) would you need to weigh out?
Calculate the osmotic pressure of solutions in 1000 g of water at 25 C for the following solutes: a) 0.1 mols of CaCl2 b...
Calculate the osmotic pressure of solutions in 1000 g of water at 25 C for the following solutes: a) 0.1 mols of CaCl2 b) The same concentration of lignin at pH 12. c) The same concentration of lignin at pH 5. d) Sketch qualitatively the variation of the molar fractions (from 0.0 to 1.0) of dissociated and undissociated lignin with pH, assuming that pK = 9. ANSWER: a) 7.31 atm b) 4.88 atm c) 2.44 atm Need help solving, thanks!!!
18. What osmotic pressure in atmospheres would you expect for each of the following solutions? a)...
18. What osmotic pressure in atmospheres would you expect for each of the following solutions? a) 5.00 g of NaCl in 350.0 mL of aqueous solution at 50 °C b) 6.33 g of sodium acetate, CH3CO2Na, in 55.0 mL of aqueous solution at 10 °C. 19. Human blood gives rise to an osmotic pressure of approximately 7.7 atm at body temperature, 37.0 °C. What must the molarity of an intravenous glucose solution be to give rise to the same osmotic...
An aqueous solution is prepared by dissolving the following chemicals into distilled water: I) CaCl2 (8.0...
An aqueous solution is prepared by dissolving the following chemicals into distilled water: I) CaCl2 (8.0 mM); 3) HCl (2.0 mM). Please determine the pH of this solution at 25 °C Hint: Ionic strength effects are not negligible in this solution
22. A solution is prepared by dissolving 6.00 g of an unknown nonelectrolyte in enough water to make 1.00 L of solution. The osmotic pressure of this solution is 0.750 atm at 25.0°C. What is the molecular weight of the unknown solute (R - 0.0821 L'atm/K mol)?
What is the molarity (moles per Liter) of an aqueous solution that is prepared by dissolving 41.5 g of potassium iodide (KI; Molar Mass = 166.0 g/mole) in enough water to make 2,500.0 mL of solution? (5 points]
17. A solution is prepared by dissolving 5.00 g of aspirin, C9H3O4, in 215 g of chloroform, has a boiling point that is elevated by AT = 0.47 °C over that of pure chloroform. What is the value of the boiling point elevation constant for chloroform? 18. What osmotic pressure in atmospheres would you expect for each of the following solutions? a) 5.00 g of NaCl in 350.0 mL of aqueous solution at 50 °C
I do not know even the formula for this problem
A solution is prepared by dissolving 6.00 g of an unknown nonelectrolyte in enough water to make 1.00 L of solution. The osmotic pressure of this solution is 0.750 atm at 25.0 degree C. What is the molecular weight (g/mol) of the unknown solute?
(b) 150 mL of solution is prepared by dissolving 1.20 g of sodium c hloride, NaCI in enough water at 30 C. Given osmotic pressure is 2.20X102 atm. Determine the average molar mass of the NaCI.
18. What osmotic pressure in atmospheres would you expect for each of the following solutions? a) 5.00 g of NaCl in 350.0 mL of aqueous solution at 50 °C b) 6.33 g of sodium acetate, CH3CO2Na, in 55.0 mL of aqueous solution at 10 °C. 19. Human blood gives rise to an osmotic pressure of approximately 7.7 atm at body temperature, 37.0 °C. What must the molarity of an intravenous glucose solution be to give rise to the same osmotic...
An aqueous solution is prepared by dissolving the following chemicals into distilled water: I) CaCl2 (8.0 mM); 3) HCl (2.0 mM). Please determine the pH of this solution at 25 °C Hint: Ionic strength effects are not negligible in this solution
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