Chemistry MC: February 2020

Which one of the following substances is more likely to dissolve in CCl4?

Which one of the following substances is more likely to dissolve in CCl4? a. CBr4 b. HBr c. HCl d.CH3CH2OH e. NaCl Answer: ...

Formation of solutions where the process is endothermic can be spontaneously provided that

Formation of solutions where the process is endothermic can be spontaneously provided that a. they are accompanied by another process that is exothermic b....

Two solutions that are isotonic have the same __.

Two solutions that are isotonic have the same __. Answer: osmotic pressu...

As the temperature of a solution increases, the solubility of a gaseous solute ____.

As the temperature of a solution increases, the solubility of a gaseous solute ____. Answer: decreas...

The molality of a solution is defined as the amount of moles of solute divided by what?

The molality of a solution is defined as the amount of moles of solute divided by what? Answer: mass of solvent (k...

Which substance below is NOT a colloid?

Which substance below is NOT a colloid? a.Butter b.Smoke c.Whipped cream d. Salt water Answer: ...

A sample of 2.05 g of polystyrene of uniform polymer chain length was dissolved in enough toluene to form 0.100 L of solution. The osmotic pressure of this solution was found to be 1.21 kPa at 25 C. Calculate the molar mass of the polystyrene.

A sample of 2.05 g of polystyrene of uniform polymer chain length was dissolved in enough toluene to form 0.100 L of solution. The osmotic pressure...

The osmotic pressure of an aqueous solution of a certain protein was measured to determine the protein's molar mass. The solution contained 3.50 mg of protein dissolved insufficient water to form 5.00 mL of solution. The osmotic pressure of the solution at 25 C was found to be 1.54 torr. Treating the protein as a nonelectrolyte, calculate its molar mass.

The osmotic pressure of an aqueous solution of a certain protein was measured to determine the protein's molar mass. The solution contained 3.50 mg...

If the pure water in the left arm of the U-tube is replaced by a solution more concentrated than the one in the right arm, what will happen?

If the pure water in the left arm of the U-tube is replaced by a solution more concentrated than the one in the right arm, what will happen? A. Nothing B....

In osmosis, there is the net movement of solvent from the area of __ solvent concentration to the area of _ solvent concentration.

In osmosis, there is the net movement of solvent from the area of ____ solvent concentration to the area of ___ solvent concentration. Answer: higher,...

Calculate the freezing point of a solution containing 0.600 kg of CHCl3 and 42.0 g of eucalyptol (C10H18O), a fragrant substance found in the leaves of eucalyptus trees.

Calculate the freezing point of a solution containing 0.600 kg of CHCl3 and 42.0 g of eucalyptol (C10H18O), a fragrant substance found in the leaves...

Automotive antifreeze consists of ethylene glycol, CH2(OH)CH2(OH), a nonvolatile nonelectrolyte. Calculate the boiling point and freezing point of a 25.0 mass % solution of ethylene glycol in water.

Automotive antifreeze consists of ethylene glycol, CH2(OH)CH2(OH), a nonvolatile nonelectrolyte. Calculate the boiling point and freezing point of a...

A 0.100 molal solution of which compound below will have the lowest freezing point?

A 0.100 molal solution of which compound below will have the lowest freezing point? a. NaCl b. CaCl2 c. KI d. LiNO3 Answer: ...

Nonvolatile solute-solvent interactions also cause solutions to have boiling points and freezing points than the pure solvent.

Nonvolatile solute-solvent interactions also cause solutions to have ____boiling points and ____freezing points than the pure solvent. Answer: higher,...

The vapour pressure of a solution is ___ than that of the pure solvent.

The vapour pressure of a solution is ___ than that of the pure solvent. Answer: low...

Changes in colligative properties depend only on ___.

Changes in colligative properties depend only on ___. Answer: the number of solute particles presen...

A solution with a density of 0.876 g/mL contains 5.0 g of toluene (C7H8) and 225 g of benzene. Calculate the molarity of the solution.

A solution with a density of 0.876 g/mL contains 5.0 g of toluene (C7H8) and 225 g of benzene. Calculate the molarity of the solution. Answer: 0.21...

What is the molarity of a solution made by dissolving 36.5 g of naphthalene (C10H8) in 425 g of toluene (C7H8)?

What is the molarity of a solution made by dissolving 36.5 g of naphthalene (C10H8) in 425 g of toluene (C7H8)? Answer: 0.670...

If an aqueous solution is very dilute, will its molality be?

If an aqueous solution is very dilute, will its molality be? a. greater than its molarity. b. nearly the same as its molarity. c. smaller than its...

A solution is made by dissolving 4.35 g glucose (C6H12O6) in 25.0 mL of water at 25 C. Calculate the molality of glucose in the solution. Water has a density of 1.00 g/mL.

A solution is made by dissolving 4.35 g glucose (C6H12O6) in 25.0 mL of water at 25 C. Calculate the molality of glucose in the solution. Water has...

The solubility of solid solutes in liquid solvents increases with increasing ____.

The solubility of solid solutes in liquid solvents increases with increasing ____. Answer: temperatur...

The solubility of liquids and solids ____appreciably with pressure.

The solubility of liquids and solids ____appreciably with pressure. Answer: does not chan...

The solubility of a gas in a liquid is ____ to its pressure.

The solubility of a gas in a liquid is ____ to its pressure. Answer: directly proportion...

In general, the solubility of gases in water ____ with increasing mass.

In general, the solubility of gases in water ____ with increasing mass. Answer: increas...

Arrange the following substances in order of increasing solubility in water:

Arrange the following substances in order of increasing solubility in water: C5H12OH C5H10(OH)2 C5H12 C5H11Cl Answer: C5H12<C5H11Cl...

Predict whether each of the following substances is more likely to dissolve in the nonpolar solvent carbon tetrachloride (CCl4) or in water: C7H16, Na2SO4, HCl, and I2.

Predict whether each of the following substances is more likely to dissolve in the nonpolar solvent carbon tetrachloride (CCl4) or in water: C7H16,...

Chemistry MC