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5. A mass of 31.65 g of sodium chloride is added to 218.7 g of water...
11. 40.65 g of magnesium chloride is added to 220.0 mL of water at 34 °C....
11. 40.65 g of magnesium chloride is added to 220.0 mL of water at 34 °C. What is the new boiling point of the water? Assume the magnesium chloride completely dissociates in the water. The density of water at 35 °C = 0.994 g/mL and Ko water = 0.51 °C kg/mol (aka 0.51 °C/molal).
1) What mass of water is needed to dissolve 43.5 g of copper(II) chloride to prepare...
1) What mass of water is needed to dissolve 43.5 g of copper(II) chloride to prepare a 0.521 molality solution? 2) Calculate the boiling point of a solution made from 224 g of magnesium chloride dissolved in 625 g of water. Kb=0.512 °C/m.
0.01 mol of sodium chloride, NaCl, is dissolved in 100 g of water. By how much...
0.01 mol of sodium chloride, NaCl, is dissolved in 100 g of water. By how much would this elevate the boiling point? The boiling point elevation constant, kb, of water is 0.512 °C/m. A. 0.0512 °C OB.5.12 °C OC. 0.102 °C OD.5.12 x 10-5 oC
A solution of ethylene glycol in water at 20.0°C has a mass percent of 8.25% of...
A solution of ethylene glycol in water at 20.0°C has a mass percent of 8.25% of ethylene glycol with a density of 1.0087 g/mL. The freezing point depression constant for water (which you can assume is the solvent for all solutions) is K1.86°C kg/mol and the boiling point elevation constant is Kb the following: 0.512°C kg/mol. The density of neat water at 20.0°C is 0.9982 g/ml. Answer 1. What is the molarity of the solution? 2. What is the molality...
F. A solution was prepared by dissolving 0.800 g of sulfur S8, in 100.0 g of...
F. A solution was prepared by dissolving 0.800 g of sulfur S8, in 100.0 g of acetic acid, HC2H3O2. Calculate the freezing point and boiling point of the solution . For the solvent, Kb = 3.08 oC/m and Kf = 3.59 oC/m. G. Butylated hydroxytoluene (BHT) is used as an antioxidant in processed foods. (It prevents fats and oils from becoming rancid.) A solution of 2.500 g of BHT in 100.0 g of benzene had a freezing point of...
4. What is the mass % of NaCl if 15 g sodium chloride are dissolved in...
4. What is the mass % of NaCl if 15 g sodium chloride are dissolved in 374 g H2O? (Hint: don't forget that solution mass = solute + solvent mass.) 5. What mass of acetic acid (HC2H302 = 60 g/mol) must be dissolved in 1340 g H2O to produce a 2.75 m solution? 6. What is the new volume of a solution if 437 mL of a .968 M solution are diluted to a .315 M solution? 7. One solution...
A solution of ethylene glycol in water at 20 degrees celsius has a mass percent of...
A solution of ethylene glycol in water at 20 degrees celsius has a mass percent of 9.78% of ethylene glycol with a density of 1.0108 g/mL. The freezing point depression constant for water (solvent for all solutions) is Kf=-1.86 percent celsius kg/mol and the boiling point elevation constant is Kb=0.512 degrees celsius kg/mol. The density of neat water at 20.0 degrees celsius is 0.9982 g/mL. Answer the following: 1. What is the molarity of the solution? 2. What is the...
A. What is the percentage by mass of NaCl in saturated solution of sodium chloride at...
A. What is the percentage by mass of NaCl in saturated
solution of sodium chloride at 50°C?
B. Calculate the solubility of potassium bromide at
23°C? Hint: assume that the solubility increases by an equal amount
for each degree between 20°C and 30°C?
C. A saturated solution of barium chloride at 30°C
contains 150g water. How much additional barium chloride can be
dissolved by heating this solution to 60°C?
tream REPORT FOR EXPERIMENT 9 (continued) NAME F. Solubility vs. Temperature;...
What is the boiling point elevation of a solution containing 17.1 g of sucrose in 100.0...
What is the boiling point elevation of a solution containing 17.1 g of sucrose in 100.0 g of water? The molal elevation constant of water is 0.512°C/m and the molar mass of sucrose is 342 g/mol.
Question 5 O out of 1 points Lanthanum(III) chloride dissolves in water according to: LaCl3(s) +...
Question 5 O out of 1 points Lanthanum(III) chloride dissolves in water according to: LaCl3(s) + La3+ (aq) + 3 Cl(aq). What is the boiling point of the solution when 0.2453 g of LaCl3 (molar mass 245.3 g/mol) is dissolved in 10.0 g of H20? (Kb of water is 0.512 °C/m.) Selected Answer: Correct Answer: B. 100.0512 °C D. 100.205 °C
11. 40.65 g of magnesium chloride is added to 220.0 mL of water at 34 °C. What is the new boiling point of the water? Assume the magnesium chloride completely dissociates in the water. The density of water at 35 °C = 0.994 g/mL and Ko water = 0.51 °C kg/mol (aka 0.51 °C/molal).
1) What mass of water is needed to dissolve 43.5 g of copper(II) chloride to prepare a 0.521 molality solution? 2) Calculate the boiling point of a solution made from 224 g of magnesium chloride dissolved in 625 g of water. Kb=0.512 °C/m.
0.01 mol of sodium chloride, NaCl, is dissolved in 100 g of water. By how much would this elevate the boiling point? The boiling point elevation constant, kb, of water is 0.512 °C/m. A. 0.0512 °C OB.5.12 °C OC. 0.102 °C OD.5.12 x 10-5 oC
A solution of ethylene glycol in water at 20.0°C has a mass percent of 8.25% of ethylene glycol with a density of 1.0087 g/mL. The freezing point depression constant for water (which you can assume is the solvent for all solutions) is K1.86°C kg/mol and the boiling point elevation constant is Kb the following: 0.512°C kg/mol. The density of neat water at 20.0°C is 0.9982 g/ml. Answer 1. What is the molarity of the solution? 2. What is the molality...
4. What is the mass % of NaCl if 15 g sodium chloride are dissolved in 374 g H2O? (Hint: don't forget that solution mass = solute + solvent mass.) 5. What mass of acetic acid (HC2H302 = 60 g/mol) must be dissolved in 1340 g H2O to produce a 2.75 m solution? 6. What is the new volume of a solution if 437 mL of a .968 M solution are diluted to a .315 M solution? 7. One solution...
A. What is the percentage by mass of NaCl in saturated
solution of sodium chloride at 50°C?
B. Calculate the solubility of potassium bromide at
23°C? Hint: assume that the solubility increases by an equal amount
for each degree between 20°C and 30°C?
C. A saturated solution of barium chloride at 30°C
contains 150g water. How much additional barium chloride can be
dissolved by heating this solution to 60°C?
tream REPORT FOR EXPERIMENT 9 (continued) NAME F. Solubility vs. Temperature;...
Question 5 O out of 1 points Lanthanum(III) chloride dissolves in water according to: LaCl3(s) + La3+ (aq) + 3 Cl(aq). What is the boiling point of the solution when 0.2453 g of LaCl3 (molar mass 245.3 g/mol) is dissolved in 10.0 g of H20? (Kb of water is 0.512 °C/m.) Selected Answer: Correct Answer: B. 100.0512 °C D. 100.205 °C
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