Question 1

The chart below illustrates the composition of air.According to this chart

Accepted Answer

A)  nitrogen and oxygen are solutes, and argon and carbon dioxide are solvents. 
B)  carbon dioxide is the only solute in air. 
C)  oxygen, argon, and carbon dioxide are solutes, and nitrogen is the solvent. 
D)  nitrogen is the solute, and oxygen, argon, and carbon dioxide are all solvents. 
E)  nitrogen, oxygen, argon, and carbon dioxide are all solutes in air. 
A)  nitrogen and oxygen are solutes, and argon and carbon dioxide are solvents. 
B)  carbon dioxide is the only solute in air. 
C)  oxygen, argon, and carbon dioxide are solutes, and nitrogen is the solvent. 
D)  nitrogen is the solute, and oxygen, argon, and carbon dioxide are all solvents. 
E)  nitrogen, oxygen, argon, and carbon dioxide are all solutes in air.

Question 2

There are many mixtures in the body.The most common ______ for these mixtures is water.

Accepted Answer

A)  solvent 
B)  solute 
C)  medium 
D)  colloid 
E)  solution 
A)  solvent 
B)  solute 
C)  medium 
D)  colloid 
E)  solution

Question 3

Which statement explains why whole blood has characteristics of a solution, a colloid, and a suspension?

Accepted Answer

A)  Whole blood separates upon centrifugation. 
B)  Whole blood contains many different particles that don't settle out upon standing. 
C)  Whole blood contains many soluble molecules. 
D)  Whole blood contains particles that range in size and solubility. 
E)  Actually, whole blood is only a suspension because it contains red blood cells. 
A)  Whole blood separates upon centrifugation. 
B)  Whole blood contains many different particles that don't settle out upon standing. 
C)  Whole blood contains many soluble molecules. 
D)  Whole blood contains particles that range in size and solubility. 
E)  Actually, whole blood is only a suspension because it contains red blood cells.

Question 4

The function of dialysate is similar in function to which part of the diagram below?

Accepted Answer

A)  the semipermeable membrane 
B)  container 1 
C)  container 2 
D)  molecule A 
E)  molecule B 
A)  the semipermeable membrane 
B)  container 1 
C)  container 2 
D)  molecule A 
E)  molecule B

Question 5

A solution is prepared by dissolving 1.5 g of NaCl in enough water to produce a total solution volume of 750 mL.What is the concentration of the solution in % m/v?

Accepted Answer

A)  0.20% 
B)  2.0% 
C)  0.0020% 
D)  500% 
E)  5.0% 
A)  0.20% 
B)  2.0% 
C)  0.0020% 
D)  500% 
E)  5.0%

Question 6

A technician needs to make 500 mL of a 50 mM solution.How many milliliters of the 200 mM stock solution are needed?

Accepted Answer

A)  12.5 mL 
B)  125 mL 
C)  1250 mL 
D)  8.0 mL 
E)  80 mL 
A)  12.5 mL 
B)  125 mL 
C)  1250 mL 
D)  8.0 mL 
E)  80 mL

Question 7

What volume of a 6.0% solution of ethanol contains 3.0 g of ethanol?

Accepted Answer

A)  5.0 mL 
B)  6.0 mL 
C)  10 mL 
D)  30 mL 
E)  50 mL 
A)  5.0 mL 
B)  6.0 mL 
C)  10 mL 
D)  30 mL 
E)  50 mL

Question 8

How many grams of NaCl are in 350 mL of normal saline (0.9% NaCl)?

Accepted Answer

A)  3150 g 
B)  315 g 
C)  31.5 g 
D)  3.15 g 
E)  0.315 g 
A)  3150 g 
B)  315 g 
C)  31.5 g 
D)  3.15 g 
E)  0.315 g

Question 9

Table sugar is a

Accepted Answer

A)  solution. 
B)  solvent. 
C)  element. 
D)  compound. 
E)  suspension. 
A)  solution. 
B)  solvent. 
C)  element. 
D)  compound. 
E)  suspension.

Question 10

A technician adds 0.250 L of 200 mM buffer stock solution to a volumetric flask and dilutes the stock to 1.0 L.What is the final concentration of the solution?

Accepted Answer

A)  0.11 mM 
B)  110 mM 
C)  11 mM 
D)  50 mM 
E)  5.0 mM 
A)  0.11 mM 
B)  110 mM 
C)  11 mM 
D)  50 mM 
E)  5.0 mM

Question 11

In hemodialysis, the solution used in the dialyzer, the dialysate is __________ with respect to blood.

Accepted Answer

A)  isotonic 
B)  hypotonic 
C)  hypertonic 
D)  unrelated to blood 
E)  contains pure water 
A)  isotonic 
B)  hypotonic 
C)  hypertonic 
D)  unrelated to blood 
E)  contains pure water

Question 12

Jane Doe's blood test showed that her iron is 125 mg/dL.How many grams per liter, g/L, is 125 mg/dL?

Accepted Answer

A)  12,500 g/L 
B)  1.25 g/L 
C)  0.00125 g/L 
D)  125 g/L 
E)  1250 g/L 
A)  12,500 g/L 
B)  1.25 g/L 
C)  0.00125 g/L 
D)  125 g/L 
E)  1250 g/L

Question 13

It is normal to have about 100 mM (mmol/L)of chloride (Cl-)in the blood.How many meq is this?

Accepted Answer

A)  1 × 105 meq 
B)  100 meq 
C)  1 meq 
D)  0.1 meq 
E)  1 × 10-5 meq 
A)  1 × 105 meq 
B)  100 meq 
C)  1 meq 
D)  0.1 meq 
E)  1 × 10-5 meq

Question 14

Which term BEST describes the process illustrated here?

Accepted Answer

A)  mixing 
B)  dialysis 
C)  dilution 
D)  osmosis 
E)  None of the above is correct. 
A)  mixing 
B)  dialysis 
C)  dilution 
D)  osmosis 
E)  None of the above is correct.

Question 15

Cephadrine is one of many antibiotics that act by inhibiting bacterial cell wall synthesis.If a typical daily dosage is 560 mg, how many milliliters of 80.mg/mL suspension of cephadrine should be administered daily?

Accepted Answer

A)  560 mL 
B)  7.0 mL 
C)  0.014 mL 
D)  448 mL 
E)  14 mL 
A)  560 mL 
B)  7.0 mL 
C)  0.014 mL 
D)  448 mL 
E)  14 mL

Question 16

When sodium chloride dissolves in water, it forms _______ with water molecules.

Accepted Answer

A)  hydrogen bonds 
B)  ionic bonds 
C)  dipole-dipole interactions 
D)  covalent bonds 
E)  ion-dipole interactions 
A)  hydrogen bonds 
B)  ionic bonds 
C)  dipole-dipole interactions 
D)  covalent bonds 
E)  ion-dipole interactions

Question 17

How does an electrolyte differ from a nonelectrolyte?

Accepted Answer

A)  Electrolytes are smaller than nonelectrolytes. 
B)  Electrolytes dissolve in water; nonelectrolytes are insoluble in water. 
C)  Electrolytes are less polar than nonelectrolytes. 
D)  Electrolytes produce ions in solution while nonelectrolytes do not. 
E)  Electrolytes are more reactive than nonelectrolytes. 
A)  Electrolytes are smaller than nonelectrolytes. 
B)  Electrolytes dissolve in water; nonelectrolytes are insoluble in water. 
C)  Electrolytes are less polar than nonelectrolytes. 
D)  Electrolytes produce ions in solution while nonelectrolytes do not. 
E)  Electrolytes are more reactive than nonelectrolytes.

Question 18

The concentration of an adrenalin chloride solution, used to treat acute allergic responses, is 15 mg in 30.mL.Express this concentration in units of mg/mL (milligrams per milliliter).

Accepted Answer

A)  0.50 mg/mL 
B)  2.0 mg/ml 
C)  5.0 mg/mL 
D)  45 mg/mL 
E)  450 mg/mL 
A)  0.50 mg/mL 
B)  2.0 mg/ml 
C)  5.0 mg/mL 
D)  45 mg/mL 
E)  450 mg/mL

Question 19

How many grams of dextrose are in 100 mL of D5W (5.0% dextrose)?

Accepted Answer

A)  50 g 
B)  5.0 g 
C)  0.50 g 
D)  0.050 g 
E)  0.0050 g 
A)  50 g 
B)  5.0 g 
C)  0.50 g 
D)  0.050 g 
E)  0.0050 g

Question 20

When MgCl2 dissolves in water, it produces Mg2+ and Cl- ions.Which statement BEST describes the interaction between Cl- and water?

Accepted Answer

A)  Chloride anions are attracted to the partial negative charge of oxygen. 
B)  Chloride anions are attracted to the partial positive charge of oxygen. 
C)  Chloride anions are attracted to the partial negative charge of hydrogen. 
D)  Chloride anions are attracted to the partial positive charge of hydrogen. 
E)  Chloride anions are not attracted to any part of water. 
A)  Chloride anions are attracted to the partial negative charge of oxygen. 
B)  Chloride anions are attracted to the partial positive charge of oxygen. 
C)  Chloride anions are attracted to the partial negative charge of hydrogen. 
D)  Chloride anions are attracted to the partial positive charge of hydrogen. 
E)  Chloride anions are not attracted to any part of water.

The chart below illustrates the composition of air.According to this chart

There are many mixtures in the body.The most common ______ for these mixtures is water.

Which statement explains why whole blood has characteristics of a solution, a colloid, and a suspension?

The function of dialysate is similar in function to which part of the diagram below?

A solution is prepared by dissolving 1.5 g of NaCl in enough water to produce a total solution volume of 750 mL.What is the concentration of the solution in % m/v?

A technician needs to make 500 mL of a 50 mM solution.How many milliliters of the 200 mM stock solution are needed?

What volume of a 6.0% solution of ethanol contains 3.0 g of ethanol?

How many grams of NaCl are in 350 mL of normal saline (0.9% NaCl)?

Table sugar is a

A technician adds 0.250 L of 200 mM buffer stock solution to a volumetric flask and dilutes the stock to 1.0 L.What is the final concentration of the solution?

In hemodialysis, the solution used in the dialyzer, the dialysate is __________ with respect to blood.

Jane Doe's blood test showed that her iron is 125 mg/dL.How many grams per liter, g/L, is 125 mg/dL?

It is normal to have about 100 mM (mmol/L)of chloride (Cl^-)in the blood.How many meq is this?

Which term BEST describes the process illustrated here?

Cephadrine is one of many antibiotics that act by inhibiting bacterial cell wall synthesis.If a typical daily dosage is 560 mg, how many milliliters of 80.mg/mL suspension of cephadrine should be administered daily?

When sodium chloride dissolves in water, it forms _______ with water molecules.

How does an electrolyte differ from a nonelectrolyte?

The concentration of an adrenalin chloride solution, used to treat acute allergic responses, is 15 mg in 30.mL.Express this concentration in units of mg/mL (milligrams per milliliter).

How many grams of dextrose are in 100 mL of D5W (5.0% dextrose)?

When MgCl₂ dissolves in water, it produces Mg²⁺ and Cl^- ions.Which statement BEST describes the interaction between Cl^- and water?

Matter, Energy, and Measurement

Atomic Structure and Radioisotopes

Ionic and Covalent Compounds

Molecular Geometry, Polarity, and Intermolecular

Chemical Quantities and Introduction to Reactions

Chemical Reactions: Energy, Rates, and Equilibrium

Changes of State and Gas Laws

Acids and Bases, Ph, and Buffers

Introduction to Organic Chemistry:

Alcohols, Phenols, Thiols, Ethers, and Amines

The Carbonyl Containing Functional Groups

The Common Organic Reactions in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Energy and Metabolism

Filters

Exam 8: Mixtures, Solution Concentrations, and Diffusion

The chart below illustrates the composition of air.According to this chart

There are many mixtures in the body.The most common ______ for these mixtures is water.

Which statement explains why whole blood has characteristics of a solution, a colloid, and a suspension?

The function of dialysate is similar in function to which part of the diagram below?

A solution is prepared by dissolving 1.5 g of NaCl in enough water to produce a total solution volume of 750 mL.What is the concentration of the solution in % m/v?

A technician needs to make 500 mL of a 50 mM solution.How many milliliters of the 200 mM stock solution are needed?

What volume of a 6.0% solution of ethanol contains 3.0 g of ethanol?

How many grams of NaCl are in 350 mL of normal saline (0.9% NaCl)?

Table sugar is a

A technician adds 0.250 L of 200 mM buffer stock solution to a volumetric flask and dilutes the stock to 1.0 L.What is the final concentration of the solution?

In hemodialysis, the solution used in the dialyzer, the dialysate is __________ with respect to blood.

Jane Doe's blood test showed that her iron is 125 mg/dL.How many grams per liter, g/L, is 125 mg/dL?

It is normal to have about 100 mM (mmol/L)of chloride (Cl-)in the blood.How many meq is this?

Which term BEST describes the process illustrated here?

Cephadrine is one of many antibiotics that act by inhibiting bacterial cell wall synthesis.If a typical daily dosage is 560 mg, how many milliliters of 80.mg/mL suspension of cephadrine should be administered daily?

When sodium chloride dissolves in water, it forms _______ with water molecules.

How does an electrolyte differ from a nonelectrolyte?

The concentration of an adrenalin chloride solution, used to treat acute allergic responses, is 15 mg in 30.mL.Express this concentration in units of mg/mL (milligrams per milliliter).

How many grams of dextrose are in 100 mL of D5W (5.0% dextrose)?

When MgCl2 dissolves in water, it produces Mg2+ and Cl- ions.Which statement BEST describes the interaction between Cl- and water?

Matter, Energy, and Measurement

Atomic Structure and Radioisotopes

Ionic and Covalent Compounds

Molecular Geometry, Polarity, and Intermolecular

Chemical Quantities and Introduction to Reactions

Chemical Reactions: Energy, Rates, and Equilibrium

Changes of State and Gas Laws

Acids and Bases, Ph, and Buffers

Introduction to Organic Chemistry:

Alcohols, Phenols, Thiols, Ethers, and Amines

The Carbonyl Containing Functional Groups

The Common Organic Reactions in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Energy and Metabolism

Filters

It is normal to have about 100 mM (mmol/L)of chloride (Cl^-)in the blood.How many meq is this?

When MgCl₂ dissolves in water, it produces Mg²⁺ and Cl^- ions.Which statement BEST describes the interaction between Cl^- and water?