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How does the surface tension of water compare with the surface tensions of most other liquids?
it is higher
Which of the following is primarily responsible for holding water molecules together in the liquid state?
Which of the following is NOT a result of surface tension in water?
Water has an unusually low vapor pressure
The fact that ice is less dense than water is related to the fact that ____.
ice has a molecular structure that is an open framework held together by hydrogen bonds.
Which of the following compounds is a nonelectrolyte when pure, but an electrolyte when dissolved in water?
Which of the following are weak electrolytes in water?
ionic compounds that partially dissociate in water
Which of the following usually makes a substance dissolve faster in a solvent?
agitating the solution
Which of the following expressions is generally used for solubility?
grams of solute per 100 grams of solvent
Which of the following pairs of factors affects the solubility of a particular substance?
particle size and temperature
If a crystal added to an aqueous solution causes many particles to come out of the solution, the original solution was ____.
If the solubility of a particular solute is 10g/100gH20 at 20 C, which of the following solution concentrations would represent a supersaturated aqueous solution of that solute?
11g/100g h2o at 20 C
What happens to the solubility of a gas, in a liquid, if the partial pressure of the gas above the liquid decreases?
the solubility decreases
If the solubility of a gas in water is 4.0 g/L when the pressure of the gas above the water is 3.0 atm, what is the pressure of the gas above the water when the solubility of the gas is 1.0 g/L?
In which of the following is the solution concentration expressed in terms of molarity?
10 mol of solute/ 1 L of solution
Which of the following operations yields the number of moles of solute?
molarity x liters of solution
What does NOT change when a solution is diluted by the addition of solvent?
number of moles of solute
If 2.0 mL of 6.0M HCl is used to make a 500.0-mL aqueous solution, what is the molarity of the dilute solution?
To 225 mL of a 0.80M solution of KI, a student adds enough water to make 1.0 L of a more dilute KI solution. What is the molarity of the new solution?
If the percent (mass/mass) for a solute is 4% and the mass of the solution is 200 g, what is the mass of solute in solution?
In which of the following is concentration expressed in percent by volume?
10mL solute/ 100mL SOLUTION
What is the number of kilograms of solvent in a 0.70 molal solution containing 5.0 grams of solute? (molar mass of solute = 30 g)
What is the freezing point of a solution of 0.5 mol of LiBr in 500 mL of water? (K = 1.86 C/m)
The freezing point of a solution that contains 0.550 moles of NaI in 615 g of water is ____. (K = 1.86 C/m; molar mass of water = 18 g)
What is the boiling point of a solution that contains 3 moles of KBr in 2000 g of water? (K = 0.512 C/m; molar mass of water = 18 g)
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