Calculate the boiling point of a solution of 500.0 g of ethylene glycol (C2H6O2)dissolved in 500.0 g of water.Kf = 1.86°C/m and Kb = 0.512°C/m.Use 100°C as the boiling point of water.

A) 108°C B) 92°C C) 130°C D) 70°C E) 8.3°C A) 108°C B) 92°C C) 130°C D) 70°C E) 8.3°C

Calculate the freezing point of a solution of 40.0 g methyl salicylate,C7H6O2,dissolved in 800.g of benzene,C6H6.Kf for benzene is 5.10°C/m and the freezing point is 5.50°C for benzene.

A) -2.09°C B) 2.09°C C) 3.41°C D) 7.59°C A) -2.09°C B) 2.09°C C) 3.41°C D) 7.59°C

What volume of 3.00 M CH3COOH solution is needed to provide 0.220 mol of CH3COOH?

A) 1.52 mL B) 13.6 mL C) 73.3 mL D) 660 mL A) 1.52 mL B) 13.6 mL C) 73.3 mL D) 660 mL

Determine the vapor pressure of a solution at 25°C that contains 76.6 g of glucose (C6H12O6)in 250.0 mL of water.The vapor pressure of pure water at 25°C is 23.8 torr.

A) 70.8 torr B) 72.9 torr C) 23.1 torr D) 22.9 torr E) 7.29 torr A) 70.8 torr B) 72.9 torr C) 23.1 torr D) 22.9 torr E) 7.29 torr

Exam 13: Solutions

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Calculate the boiling point of a solution of 500.0 g of ethylene glycol (C₂H₆O₂)dissolved in 500.0 g of water.K_f = 1.86°C/m and K_b = 0.512°C/m.Use 100°C as the boiling point of water.

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Question 141

Calculate the number of moles of sulfuric acid that is contained in 0.250 mL of 0.500 M sulfuric acid solution.

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Question 142

At a given temperature,the vapor pressures of hexane and octane are 183 mm Hg and 59.2 mm Hg,respectively.Calculate the total vapor pressure over a solution of hexane and octane.The mole fraction of hexane (X_hexane)is 0.580.

(Multiple Choice)

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Question 143

Calculate the freezing point of a solution of 40.0 g methyl salicylate,C₇H₆O₂,dissolved in 800.g of benzene,C₆H₆.K_f for benzene is 5.10°C/m and the freezing point is 5.50°C for benzene.

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Question 144

What volume of 3.00 M CH₃COOHsolution is needed to provide 0.220 mol of CH₃COOH?

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Question 145

At 20°C,a 2.32 M aqueous solution of ammonium chloride has a density of 1.0344 g/mL.What is the molality of ammonium chloride in the solution? The formula weight of NH₄Cl is 53.50 g/mol.

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Question 146

Which of the following concentration units is temperature dependent?

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Question 147

Define floating volcanic ash as a colloid.

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Question 148

What is the weight percent of vitamin C in a solution made by dissolving 2.60 g of vitamin C,C₆H₈O₆,in 55.0 g of water?

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Question 149

Choose the solvent below that would show the greatest freezing point lowering when used to make a 0.20 m nonelectrolyte solution.

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Question 150

What is the mole fraction of ethanol in a solution made by dissolving 29.2 g of ethanol,C₂H₅OH,in 53.6 g of water?

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Question 151

______ is burped up from the bottom of a water-filled volcanic crater.

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Question 152

A 6.92 L sample of water contains 0.175 g of calcium ions.Determine the concentration of calcium ions in ppm if the density of the solution is 1.00 g/mL.

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Question 153

Determine the vapor pressure of a solution at 25°C that contains 76.6 g of glucose (C₆H₁₂O₆)in 250.0 mL of water.The vapor pressure of pure water at 25°C is 23.8 torr.

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Question 154

What volume of a 0.716 M KBr solution is needed to provide 30.5 g of KBr?

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Question 155

What mass of LiF is contained in 18.66 g of a 20.0% by mass solution of LiF in water?

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Question 156

How many grams of KBr are required to make 350.mL of a 0.115 M KBr solution?

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Question 157

Showing 141 - 157 of 157

Exam 13: Solutions

Calculate the boiling point of a solution of 500.0 g of ethylene glycol (C2H6O2)dissolved in 500.0 g of water.Kf = 1.86°C/m and Kb = 0.512°C/m.Use 100°C as the boiling point of water.

Calculate the number of moles of sulfuric acid that is contained in 0.250 mL of 0.500 M sulfuric acid solution.

At a given temperature,the vapor pressures of hexane and octane are 183 mm Hg and 59.2 mm Hg,respectively.Calculate the total vapor pressure over a solution of hexane and octane.The mole fraction of hexane (Xhexane)is 0.580.

Calculate the freezing point of a solution of 40.0 g methyl salicylate,C7H6O2,dissolved in 800.g of benzene,C6H6.Kf for benzene is 5.10°C/m and the freezing point is 5.50°C for benzene.

What volume of 3.00 M CH3COOH solution is needed to provide 0.220 mol of CH3COOH?

At 20°C,a 2.32 M aqueous solution of ammonium chloride has a density of 1.0344 g/mL.What is the molality of ammonium chloride in the solution? The formula weight of NH4Cl is 53.50 g/mol.

Which of the following concentration units is temperature dependent?

Define floating volcanic ash as a colloid.

What is the weight percent of vitamin C in a solution made by dissolving 2.60 g of vitamin C,C6H8O6,in 55.0 g of water?

Choose the solvent below that would show the greatest freezing point lowering when used to make a 0.20 m nonelectrolyte solution.

What is the mole fraction of ethanol in a solution made by dissolving 29.2 g of ethanol,C2H5OH,in 53.6 g of water?

______ is burped up from the bottom of a water-filled volcanic crater.

A 6.92 L sample of water contains 0.175 g of calcium ions.Determine the concentration of calcium ions in ppm if the density of the solution is 1.00 g/mL.

Determine the vapor pressure of a solution at 25°C that contains 76.6 g of glucose (C6H12O6)in 250.0 mL of water.The vapor pressure of pure water at 25°C is 23.8 torr.

What volume of a 0.716 M KBr solution is needed to provide 30.5 g of KBr?

What mass of LiF is contained in 18.66 g of a 20.0% by mass solution of LiF in water?

How many grams of KBr are required to make 350.mL of a 0.115 M KBr solution?

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Calculate the boiling point of a solution of 500.0 g of ethylene glycol (C₂H₆O₂)dissolved in 500.0 g of water.K_f = 1.86°C/m and K_b = 0.512°C/m.Use 100°C as the boiling point of water.

At a given temperature,the vapor pressures of hexane and octane are 183 mm Hg and 59.2 mm Hg,respectively.Calculate the total vapor pressure over a solution of hexane and octane.The mole fraction of hexane (X_hexane)is 0.580.

Calculate the freezing point of a solution of 40.0 g methyl salicylate,C₇H₆O₂,dissolved in 800.g of benzene,C₆H₆.K_f for benzene is 5.10°C/m and the freezing point is 5.50°C for benzene.

What volume of 3.00 M CH₃COOHsolution is needed to provide 0.220 mol of CH₃COOH?

At 20°C,a 2.32 M aqueous solution of ammonium chloride has a density of 1.0344 g/mL.What is the molality of ammonium chloride in the solution? The formula weight of NH₄Cl is 53.50 g/mol.

What is the weight percent of vitamin C in a solution made by dissolving 2.60 g of vitamin C,C₆H₈O₆,in 55.0 g of water?

What is the mole fraction of ethanol in a solution made by dissolving 29.2 g of ethanol,C₂H₅OH,in 53.6 g of water?

Determine the vapor pressure of a solution at 25°C that contains 76.6 g of glucose (C₆H₁₂O₆)in 250.0 mL of water.The vapor pressure of pure water at 25°C is 23.8 torr.