Filters
Question type
Study Flashcards

What is the molality of a solution made by dissolving 14.7 g of C6H12O6 into 150.0 mL of water? Assume the density of water is 1.00 g/mL.


A) 0.544
B) 0.0816
C) 10.2
D) 0.980
E) none of the above

F) A) and E)
G) B) and C)

Correct Answer

verifed

verified

A solution that is 13.58 percent by mass of sugar contains 13.75 grams of sugar dissolved in 87.5 grams of water.

A) True
B) False

Correct Answer

verifed

verified

How many grams of KCl are present in 75.0 mL of 2.10 M KCl?


A) 5.59
B) 117
C) 2.66
D) 11.7
E) none of the above

F) B) and E)
G) C) and E)

Correct Answer

verifed

verified

A 0.10 molality solution of the sugar glucose (molecular weight = 180.10 g/mol)and a 0.10 molality solution of sucrose (molecular weight = 342.34 g/mol)would both boil at the same temperature.

A) True
B) False

Correct Answer

verifed

verified

The fact that the oceans contain salt water shows that polar solvents dissolve ionic solutes.

A) True
B) False

Correct Answer

verifed

verified

Osmotic pressure is:


A) the pressure required to stop the flow of solvent from a region of high solute concentration to a region of low solute concentration.
B) the pressure required to stop the rupture of the semipermeable membrane.
C) the pressure required to reverse the flow of solvent through a semipermeable membrane during osmosis.
D) the pressure required to stop the flow of solvent from a region of low solute concentration through a semipermeable membrane into a region of high solute concentration.
E) none of the above

F) A) and B)
G) B) and D)

Correct Answer

verifed

verified

What is the change in the freezing point of a solution made by dissolving 14.7 g of C6H12O6 into 150.0 mL of water? The density of water is 1.00 g/mL and Kf = 1.86°C/m.


A) 0.152°C
B) 1.01°C
C) 18.97°C
D) 1.82°C
E) none of the above

F) A) and C)
G) D) and E)

Correct Answer

verifed

verified

Which of the following substances is NOT a solution?


A) air
B) brass
C) vodka
D) copper
E) All of the above are solutions.

F) A) and C)
G) B) and C)

Correct Answer

verifed

verified

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


A) the level of liquid in the left arm is now higher.
B) the level of the liquid in the right arm is now higher.
C) the levels in both arms stay at the same height.
D) no molecules of any type cross the membrane.
E) none of the above

F) All of the above
G) C) and D)

Correct Answer

verifed

verified

How many grams of LiF would be present in 575 mL of 0.750 M LiF solution?


A) 11.2
B) 0.0338
C) 1.12 × 104
D) 19.9
E) 33.8

F) A) and C)
G) C) and D)

Correct Answer

verifed

verified

A 0.15 M solution of BaCl2 contains:


A) 0.15 M Ba2+ ions and 0.15 M Cl- ions.
B) 0.15 M Ba2+ ions and 0.30 M Cl- ions.
C) 0.30 M Ba2+ ions and 0.15 M Cl- ions.
D) 0.30 M Ba2+ ions and 0.30 M Cl- ions.
E) none of the above

F) B) and D)
G) B) and E)

Correct Answer

verifed

verified

Hexane,a nonpolar solvent,will dissolve which of the following substances?


A) sodium chloride
B) oil
C) ammonium acetate
D) vinegar (acetic acid)
E) none of the above

F) A) and C)
G) A) and B)

Correct Answer

verifed

verified

Why is NOT a good idea to drink seawater when people are lost at sea?


A) The high concentration of salt forces water out of the cells lining your stomach and intestine.
B) The osmotic pressure builds up in the cells of your intestine until they potentially rupture.
C) The semipermeable membrane protecting your stomach is ruptured during osmosis.
D) The seawater has fish urine in it and who wants to drink that?
E) none of the above

F) C) and E)
G) A) and B)

Correct Answer

verifed

verified

Air is an example of a gaseous solution.

A) True
B) False

Correct Answer

verifed

verified

The solubility of gases in water increases with increasing pressure above the water.

A) True
B) False

Correct Answer

verifed

verified

Which of the following substances is NOT a solution?


A) homogenized milk
B) bronze
C) sea water
D) soda
E) All of the above are solutions.

F) A) and B)
G) B) and E)

Correct Answer

verifed

verified

Warm beer goes flat quicker than cold beer.

A) True
B) False

Correct Answer

verifed

verified

Suppose a vodka martini contains 30% alcohol with the remaining portion of the drink composed of water.What is the solute in this type of martini?


A) water
B) alcohol
C) ice
D) olive
E) none of the above

F) A) and C)
G) B) and D)

Correct Answer

verifed

verified

The solubility of gases in water decreases with increasing temperature.

A) True
B) False

Correct Answer

verifed

verified

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

F) C) and D)
G) A) and E)

Correct Answer

verifed

verified

Showing 81 - 100 of 110

Related Exams

Exam 1

The Chemical World

54 Questions

Exam 2

Measurement and Problem Solving

121 Questions

Exam 3

Matter and Energy

110 Questions

Exam 4

Atoms and Elements

106 Questions

Exam 5

Molecules and Compounds

101 Questions

Exam 6

Chemical Composition

111 Questions

Exam 7

Chemical Reactions

102 Questions

Exam 8

Quantities in Chemical Reactions

108 Questions

Exam 9

Electrons in Atoms and the Periodic Table

101 Questions

Exam 10

Chemical Bonding

100 Questions

Exam 11

Gases

112 Questions

Exam 12

Liquids,solids,and Intermolecular Forces

105 Questions

Exam 14

Acids and Bases

106 Questions

Exam 15

Chemical Equilibrium

106 Questions

Exam 16

Oxidation and Reduction

102 Questions

Exam 17

Radioactivity and Nuclear Chemistry

106 Questions

Exam 18

Organic Chemistry

106 Questions

Exam 19

Biochemistry

95 Questions

Show Answer