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Exam 13: Solutions

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Question 21

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It would be expected that methanol (CH₃OH)would be more soluble in water than methane (CH₄)would be.

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Question 22

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What volume of 12.0 M HCl is required to make 75.0 mL of 3.50 M HCl?

A) 21.9 mL
B) 0.560 mL
C) 257 mL
D) 560.mL
E) none of the above

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Question 23

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Molality is calculated by dividing grams of solute by kilograms of solution.

Which of the following compounds is a strong electrolyte?

How many moles of NaF are in 34.2 grams of a 45.5% by mass NaF solution?

What is the change in the boiling point of a solution made by dissolving 14.7 g of C₆H₁₂O₆ into 150.0 ml of water? The density of water is and .

How many mL of 0.218 M sodium sulfate react with exactly of BaC given the reaction:

If the solubility of sodium acetate (Molar mass = 82 g/mol) is 76 grams per 100 grams of water,which of the following solutions would be considered supersaturated?

If 50 grams of salt dissolves into 250 grams of water,the resulting solution must have a mass of 300 grams.

One liter of a 2.0 M NaOH (aq)solution contains the same number of Na⁺ ions as does one liter of a 1.0 M Na₂CO₃ (aq)solution.

A solution is saturated in both nitrogen gas (N₂) and sodium iodide (NaI) at 50°C.When the solution is cooled to 25°C,which of the following is most likely to occur?

A solution is a homogeneous mixture of two or more substances.

How many grams of barium sulfate are produced if 25.34mL of 0.113M BaCl₂ completely react given the reaction: BaCl₂(aq) + Na₂SO₄ (aq) → BaSO₄ (s) + 2NaCl (aq)

Which of the following substances is NOT a solution?

Osmotic pressure is the pressure required to completely reverse the direction of solvent movement in osmosis.

Which one of the following aqueous solutions would have the higher concentration of K⁺ (aq) ions? (Assume total solubility in water.)

How many liters of a 2.18 M solution can be made from S?

What will happen if a healthy red blood cell is placed into a container of pure water?

An osmosis cell is constructed of a "U" shaped tube with a semipermeable membrane separating the two arms of the tube.Suppose a concentrated solution is placed in the left arm of the U-tube,and a dilute concentration of the same substance is poured into the other arm to the same height.After a period of time has elapsed,you would expect to find that:

Which of the following aqueous solutions has the highest molar concentration of Na⁺ (aq) ? (Assume each compound is fully dissolved in water.)