ch9

An intravenous replacement solution contains 4.0 mEq/L of Ca2+ ions. How many grams of Ca2+ are in 3.0 L of the solution? A) 0.24 g B) 0.80 g C) 0.40 g D) 240 g E) 4.0 g

A) 0.24 g

How many equivalents are present in 5.0 moles of Al3+? A) 15 Eq B) 1.3 Eq C) 5.0 Eq D) 0.67 Eq E) 3.0 Eq

A) 15 Eq

A patient needs to receive 85 grams of glucose every 12 hours. What volume of a 5.0%(m/v) glucose solution needs to be administered to the patient each 12 hours? A) 1700 mL B) 60 mL C) 6000 mL D) 17 mL E) 204 mL

A) 1700 mL

What is the new mass/volume (m/v)% of a KOH solution that is prepared by diluting 110 mL of a 6% (m/v) KOH solution to 330 mL? A) 2% B) 1% C) 6% D) 12% E) 18%

A) 2%

What is the molarity of a solution containing 5.0 moles of KCl in 2.0 L of solution? A) 2.5 M B) 1.0 M C) 5.0 M D) 10. M E) 2.0 M

A) 2.5 M

Which starch solution will decrease in volume as osmosis occurs? A) 4% B) 10% C) Neither exerts osmotic pressure. D) They exert equal osmotic pressures. E) They exert opposite osmotic pressures.

A) 4%

Hydrogen bonds are a major factor in the structure of A) DNA. B) hydrogen chloride. C) dry ice. D) air. E) table salt.

A) DNA.

When solutions of NaCl and AgNO3 are mixed, A) a precipitate of AgCl forms. B) a precipitate of NaNO3 forms. C) no precipitate forms. D) precipitate of NaNO3 and AgCl form. E) a precipitate of AgCl2 forms

A) a precipitate of AgCl forms.

An aqueous mixture containing starch (a colloid), NaCl, glucose, and albumin (a colloid) is placed in a dialyzing bag and immersed in distilled water. Which of the following correctly describes the location of the indicated substance after dialysis? A) albumin, inside B) starch outside C) albumin inside and outside D) water inside only E) starch inside and outside

A) albumin, inside

A hydrogen bond is A) an attraction between a hydrogen atom attached to N, O, or F and an N, O, or F atom on another molecule. B) a covalent bond between H and O. C) an ionic bond between H and another atom. D) a bond that is stronger than a covalent bond. E) the polar O-H bond in water.

A) an attraction between a hydrogen atom attached to N, O, or F and an N, O, or F atom on another molecule.

A solution with the same osmotic pressure as the blood is A) isotonic to the blood. B) hypotonic to the blood. C) hypertonic to the blood. D) nontonic to the blood. E) molar to the blood.

A) isotonic to the blood.

The molarity (M) of a solution refers to A) moles of solute/L of solution. B) moles of solute/L of solvent. C) moles of solute/100 mL of solution. D) grams of solute/100 mL of solution. E) grams of solute/L of solution.

A) moles of solute/L of solution.

During the process of diluting a solution to a lower concentration, A) the amount of solute does not change. B) the amount of solvent does not change. C) there is more solute in the concentrated solution. D) the volume of the solution does not change. E) water is removed from the concentrated solution.

A) the amount of solute does not change.

A red blood cell will undergo hemolysis in A) water. B) 0.9% NaCl. C) 5% glucose. D) 5% NaCl. E) 10% glucose.

A) water.

In water, a substance that partially ionizes in solution is called a A) weak electrolyte. B) nonelectrolyte. C) semiconductor. D) nonconductor. E) strong electrolyte.

A) weak electrolyte.

What is the molarity of a KCl solution made by diluting 75.0 mL of a 0.200 M solution to a final volume of 100. mL? A) 0.267 M B) 0.150 M C) 0.200 M D) 6.67 M E) 0.100 M

B) 0.150 M

How many equivalents are present in 5.0 g of Al3+? A) 15 Eq B) 0.56 Eq C) 0.19 Eq D) 0.37 Eq E) 3 Eq

B) 0.56 Eq

What is the molarity of a solution that contains 17 g of NH3 in 0.50 L of solution? A) 34 M B) 2.0 M C) 0.50 M D) 0.029 M E) 1.0 M

B) 2.0 M

What is the concentration, in m/v percent, of a solution prepared from 50. g NaCl and 2.5 L of water? A) 5.0% B) 2.0% C) 0.020% D) 0.050% E) 20.%

B) 2.0%

What volume of a 2.00 M KCl solution is required to prepare 500. mL of a 0.100 M KCl solution? A) 0.0400 mL B) 25.0 mL C) 2.00 mL D) 1.00 × 104 mL E) 5.00 × 102 mL

B) 25.0 mL

When 200. mL of water are added to 100. mL of 12% KCl solution the final concentration of KCl is (Assume the volumes add.) A) 12%. B) 4.0%. C) 36%. D) 6.0%. E) 8.0%.

B) 4.0%.

Which one of the following compounds will NOT be soluble in water? A) NaOH B) PbS C) K2SO4 D) LiNO3 E) MgCl2

B) PbS

Which of the following occurs in this system? A) Water flows equally in both directions. B) There is a net flow of water from the 4% starch solution into the 10% starch solution. C) There is a net flow of water from the 10% starch solution into the 4% starch solution. D) Water does not cross the membrane at all. E) Starch moves out of the 10% starch solution into the 4% starch solution

B) There is a net flow of water from the 4% starch solution into the 10% starch solution.

A homogeneous mixture that does not settle out upon standing is A) an element. B) a colloid. C) a suspension. D) homogeneous. E) hydrated.

B) a colloid.

The process by which a semipermeable membrane allows water molecules, small molecules, and ions to pass through while retaining large particles is called A) osmotic pressure. B) dialysis. C) solvation. D) dilution. E) hydration.

B) dialysis.

According to Henry's law, the solubility of a gas in a liquid A) decreases as the gas pressure above the liquid increases. B) increases as the gas pressure above the liquid increases. C) remains the same as the temperature increases. D) depends on the liquid polarity. E) depends on the liquid density

B) increases as the gas pressure above the liquid increases.

Oil does not dissolve in water because A) oil is polar. B) oil is nonpolar. C) water is nonpolar. D) water is saturated. E) oil is hydrated.

B) oil is nonpolar.

The O-H bond in water is polar because A) it is an ionic bond. B) oxygen is much more electronegative than hydrogen. C) oxygen occupies more space than hydrogen. D) hydrogen is much more electronegative than oxygen. E) it is a hydrogen bond.

B) oxygen is much more electronegative than hydrogen.

A solution is prepared by dissolving 2 g of KCl in 100 g of H2O. In this solution, H2O is the A) solute. B) solvent. C) solution. D) solid. E) ionic compound.

B) solvent.

What volume of 0.10 M NaOH can be prepared from 250. mL of 0.30 M NaOH? A) 0.075 L B) 0.25 L C) 0.75 L D) 0.083 L E) 750 L

C) 0.75 L

What volume of a 1.5 M KOH solution is needed to provide 3.0 moles of KOH? A) 3.0 L B) 0.50 L C) 2.0 L D) 4.5 L E) 0.22 L

C) 2.0 L

How many grams of PbCl2 are formed when 25.0 mL of 0.654 M KCl react with Pb(NO3)2? 2KCl(aq) + Pb(NO3) 2(aq) → 2KNO3(aq) + PbCl2(s) A) 22.7 g B) 1.64 g C) 2.27 g D) 4.54 g E) 9.08 g

C) 2.27 g

Use the reaction: 2AgNO3(aq) + H2SO4(aq) → Ag2SO4(s) + 2H2O(l). What volume of 0.123 M AgNO3(aq) is needed to form 0.657 g of Ag2SO4(s)? A) 34.2 L B) 17.1 mL C) 34.3 mL D) 10.7 mL E) 53.4 mL

C) 34.3 mL

How many grams of glucose are needed to prepare 400. mL of a 2.0%(m/v) glucose solution? A) 800. g B) 0.0050 g C) 8.0 g D) 2.0 g E) 200. g

C) 8.0 g

Which one of the following compounds will NOT be soluble in water? A) LiOH B) K2S C) BaSO4 D) NaNO3 E) MgCl2

C) BaSO4

Which one of the following compounds will be soluble in water? A) AgCl B) Cu(OH)2 C) LiCl D) CaSO4 E) PbCO3

C) LiCl

Which of the following molecules can form hydrogen bonds? A) CH4 B) NaH C) NH3 D) BH3 E) HI

C) NH3

Which one of the following compounds will be soluble in water? A) AgBr B) Cu(OH)2 C) NH4Cl D) CaCO3 E) PbS

C) NH4Cl

Water is a polar solvent and hexane (C6H14) is a nonpolar solvent. Which of the following correctly describes the solubility of the solute? A) mineral oil, soluble in water B) CaCl2, soluble in hexane C) NaHCO3, soluble in water D) CCl4, soluble in water E) octane, soluble in water

C) NaHCO3, soluble in water

In a solution, the solvent A) is a liquid. B) can be a liquid or gas. C) can be a solid, liquid, or gas. D) is never a solid. E) is the substance present in the smallest concentration

C) can be a solid, liquid, or gas.

An increase in the temperature of a solution usually A) increases the boiling point. B) increases the solubility of a gas in the solution. C) increases the solubility of a solid solute in the solution. D) decreases the solubility of a solid solute in the solution. E) decreases the solubility of a liquid solute in the solution.

C) increases the solubility of a solid solute in the solution.

An equivalent is A) the amount of ion that has a 1+ charge. B) the amount of ion that has a 1- charge. C) the amount of ion that carries 1 mole of electrical charge. D) 1 mole of any ion. E) 1 mole of an ionic compound

C) the amount of ion that carries 1 mole of electrical charge.

How many moles of CaCl2 are in 250 mL of a 3.0 M of CaCl2 solution? A) 750 moles B) 1.3 moles C) 83 moles D) 0.75 mole E) 3.0 moles

D) 0.75 mole

How many equivalents are present in 0.40 moles of SO42-? A) 0.10 Eq B) 0.20 Eq C) 0.40 Eq D) 0.80 Eq E) 1.2 Eq

D) 0.80 Eq

Which solution is isotonic to a red blood cell? A) water B) 0.5% NaCl C) 2% glucose D) 0.9% NaCl E) 10% glucose

D) 0.9% NaCl

What is the molarity of a solution that contains 3.25 moles of NaNO3 in 250. mL of solution? A) 3.25 M B) 6.50 M C) 0.0130 M D) 13.0 M E) 2.60 M

D) 13.0 M

What is the molarity of a solution which contains 58.5 g of sodium chloride dissolved in 0.500 L of solution? A) 0.500 M B) 1.00 M C) 1.50 M D) 2.00 M E) 4.00 M

D) 2.00 M

What is the concentration, in mass percent, of a solution prepared from 50.0 g NaCl and 150.0 g of water? A) 0.250% B) 33.3% C) 40.0% D) 25.0% E) 3.00%

D) 25.0%

When solutions of KCl and Pb(NO3)2 are mixed, a precipitate forms. Which of the following is the balanced equation for the double replacement reaction that occurs? A) KCl(aq) + Pb(NO3) 2(aq) → KNO3(aq) + PbCl2(s) B) KNO3(aq) + PbCl2(s) → KCl(aq) + Pb(NO3) 2(aq) C) K+(aq) + NO3-(aq) → KNO3(aq) D) 2KCl (aq) + Pb(NO3)2(aq) → 2KNO3(aq) + PbCl2 (s) E) KCl(aq) + Pb(NO3)2(aq) → KNO3(aq) + PbCl(s)

D) 2KCl (aq) + Pb(NO3)2(aq) → 2KNO3(aq) + PbCl2 (s)

Which one of the following compounds will be insoluble in water? A) AgNO3 B) CaCl2 C) NH4Cl D) CaCO3 E) Pb(C2H3O2)2

D) CaCO3

The solubility of KI is 50 g in 100 g of H2O at 20 °C. If 110 grams of KI are added to 200 grams of H2O A) all of the KI will dissolve. B) the solution will freeze. C) the solution will start boiling. D) a saturated solution will form. E) the solution will be unsaturated

D) a saturated solution will form.

The mass percent concentration refers to A) grams of solute in 1 kg of solvent. B) grams of solute in 1 kg of solution. C) grams of solute in 100 g of solvent. D) grams of solute in 100 g of solution. E) grams of solvent in 100 g of solution.

D) grams of solute in 100 g of solution.

The mass/volume percent concentration refers to A) grams of solute in 1 L of solvent. B) grams of solute in 1 L of solution. C) grams of solute in 100 mL of solvent. D) grams of solute in 100 mL of solution. E) grams of solvent in 100 mL of solution.

D) grams of solute in 100 mL of solution.

A solution that has an osmotic pressure less than that of red blood cells is called A) saturated. B) hypertonic. C) isotonic. D) hypotonic. E) unsaturated.

D) hypotonic.

When some of the sugar added to iced tea remains undissolved at the bottom of the glass, the solution is A) dilute. B) polar. C) nonpolar. D) saturated. E) unsaturated.

D) saturated.

In the process known as osmosis, ________ moves through a semipermeable membrane into an area of ________ concentration. A) solute; lower solute B) solute; higher solute C) solvent; lower solute D) solvent; lower solvent E) solvent; higher solvent

D) solvent; lower solvent

When KCl dissolves in water A) the Cl- ions are attracted to dissolved K+ ions. B) the Cl- ions are attracted to the partially negative oxygen atoms of the water molecule. C) the K+ ions are attracted to Cl- ions on the KCl crystal. D) the K+ ions are attracted to the partially negative oxygen atoms of the water molecule. E) the K+ ions are attracted to the partially positive hydrogen atoms of the water molecule.

D) the K+ ions are attracted to the partially negative oxygen atoms of the water molecule.

How many mL of 0.246 M Pb(NO3)2 are needed to react with 36.0 mL of 0.322 M KCl ? 2KCl(aq) + Pb(NO3) 2(aq) → 2KNO3(aq) + PbCl2(s) A) 36.0 mL B) 18.0 mL C) 72.0 mL D) 47.1 mL E) 23.6 mL

E) 23.6 mL

What volume of 2.5% (m/v) KOH can be prepared from 125 mL of a 5.0% KOH solution? A) 0.0040 mL B) 63 mL C) 0.10 mL D) 125 mL E) 250 mL

E) 250 mL

How many milliliters of a 25% (m/v) NaOH solution would contain 75 g of NaOH? A) 25 mL B) 75 mL C) 33 mL D) 19 mL E) 3.0 × 102 mL

E) 3.0 × 102 mL

Rubbing alcohol is 70.% isopropyl alcohol by volume. How many mL of isopropyl alcohol are in a 1 pint (473 mL) container? A) 70. mL B) 0.15 mL C) 680 mL D) 470 mL E) 330 mL

E) 330 mL

A red blood cell will undergo crenation in A) water. B) 0.5% NaCl. C) 3% glucose. D) 5% glucose. E) 7% NaCl.

E) 7% NaCl.

What volume (mL) of a 15% (m/v) NaOH solution contains 120 g NaOH? A) 18 mL B) 0.13 mL C) 13 mL D) 120 mL E) 8.0 × 102 mL

E) 8.0 × 102 mL

The process that occurs in this system is A) filtration. B) hydration. C) neutralization. D) dialysis. E) osmosis.

E) osmosis.

In water, a substance that ionizes completely in solution is called a A) weak electrolyte. B) nonelectrolyte. C) semiconductor. D) nonconductor. E) strong electrolyte.

E) strong electrolyte.