Question 1 of 23
2.0/ 2.0 Points
Which of the following elements has the highest ionization energy?
A.Mg
B.Al
C.Br
Correct D.Ar
E.Ba
Answer Key: D
Question 2 of 23
2.0/ 2.0 Points
The principal quantum number (n):
Correct A.specifies the principal shell of the orbital.
B.specifies the subshell of the orbital.
C.specifies the 3-D shape of the orbital.
D.specifies the maximum number of electrons.
E.none of the above
Answer Key: A
Question 3 of 23
2.0/ 2.0 Points
How many electrons can exist in an orbital?
Correct A.2
B.3
C.1
D.4
E.none of the above
Answer Key: A
Part 2 of 8 - 6.0/ 6.0 Points
Question 4 of 23
2.0/ 2.0 Points
The correct Lewis structure for BF3 would have exactly:
A.1 double bond.
Correct B.no double bonds.
C.2 double bonds.
D.1 triple bond.
E.none of the above
Answer Key: B
Question 5 of 23
2.0/ 2.0 Points
The electronegativity value for Mg is 1.2 and the value for O is 3.5. Based on these values, what type of bond is expected for a compound formed between Mg and O?
A.Polar covalent
Correct B.Ionic
C.Pure covalent
D.not enough information
E.none of the above
Answer Key: B
Question 6 of 23
2.0/ 2.0 Points
What is the molecular geometry of CH4?
A.linear
B.bent
C.trigonal pyramidal
Correct D.tetrahedral
E.not enough information
Answer Key: D
Part 3 of 8 - 2.0/ 6.0 Points
Question 7 of 23
0.0/ 2.0 Points
The initial volume of a gas cylinder is 750.0 mL. If the pressure of a gas inside the cylinder changes from 840.0 mm Hg to 360.0 mm Hg, what is the final volume the gas occupies?
A.1.750 L
B.3.151 L
C.321.4 mL
D.630.0 mL
Incorrect E.none of the above
Answer Key: A
Question 8 of 23
2.0/ 2.0 Points
If each of the following gas samples have the same temperature and pressure, which sample has the greatest volume?
A.1 gram of Cl2
B.all have the same volume
C.1 gram of Ar
Correct D.1 gram of H2
E.not enough information
Answer Key: D
Question 9 of 23
0.0/ 2.0 Points
All of the following statements are consistent with the kinetic molecular theory of gases EXCEPT
A.Strong attractive forces hold the gas molecules together.
B.The size of the gas molecules is negligible compared to the total volume of the gas.
Incorrect C.The average kinetic energy of the molecules of a gas is proportional to the temperature of the gas in kelvins.
D.The gas molecules collide with each other and with the surfaces around them.
E.none of the above
Answer Key: A
Part 4 of 8 - 6.0/ 6.0 Points
Question 10 of 23
2.0/ 2.0 Points
Which intermolecular force is due to the formation of an instantaneous dipole?
A.hydrogen bonding
B.X-forces
C.dipole-dipole forces
Correct D.dispersion forces
E.none of the above
Answer Key: D
Question 11 of 23
2.0/ 2.0 Points
Rank the compounds NH3, CH4, and PH3 in order of increasing boiling point.
A.CH4< NH3 < PH3
B.NH3 < PH3< CH4
Correct C.CH4 < PH3 < NH3
D.NH3 < CH4< PH3
E.PH3< NH3 < CH4
Answer Key: C
Question 12 of 23
2.0/ 2.0 Points
Which intermolecular forces are found in CO2?
A.dipole-dipole forces
B.dispersion forces and dipole-dipole forces
Correct C.dispersion forces
D.hydrogen bonding
E.none of the above
Answer Key: C
Part 5 of 8 - 6.0/ 6.0 Points
Question 13 of 23
2.0/ 2.0 Points
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.10.2
Correct B.0.544
C.0.0816
D.0.980
E.none of the above
Answer Key: B
Question 14 of 23
2.0/ 2.0 Points
What volume of 12.0 M HCl is required to make 150.0 mL of 3.50 M HCl?
A.1120. mL
B.514 mL
Correct C.43.8 mL
D.0.560 mL
E.none of the above
Answer Key: C
Question 15 of 23
2.0/ 2.0 Points
The solubility of gases in water:
A.is independent of temperature.
Correct B.decreases with increasing temperature.
C.increases with increasing temperature.
D.gases are not soluble in water.
E.none of the above
Answer Key: B
Part 6 of 8 - 6.0/ 6.0 Points
Question 16 of 23
2.0/ 2.0 Points
Which of the following acids is a monoprotic, strong acid?
A.sulfuric acid
B.carbonic acid
Correct C.hydrobromic acid
D.phosphoric acid
E.none of the above
Answer Key: C
Question 17 of 23
2.0/ 2.0 Points
The Arrhenius definition of an acid is:
A.produces OH⁻ in solution.
Correct B.produces H⁺ in solution.
C.a proton acceptor.
D.a proton donor.
E.none of the above
Answer Key: B
Question 18 of 23
2.0/ 2.0 Points
A 35.0 mL sample of 0.225 M HBr was titrated with 42.3 mL of KOH. What is the concentration of the KOH?
A.0.272 M
B.0.157 M
Correct C.0.186 M
D.0.303 M
E.none of the above
Answer Key: C
Feedback: Good job.
Part 7 of 8 - 6.0/ 6.0 Points
Question 19 of 23
2.0/ 2.0 Points
Which of the following compounds will undergo an addition reaction?
A.C4H10
B.C3H8
Correct C.C2H4
D.all of the above
E.none of the above
Answer Key: C
Question 20 of 23
2.0/ 2.0 Points
The reaction
CH2=CH2 + H2 → CH3CH3
would best be described as:
Correct A.hydrogenation.
B.combustion.
C.substitution.
D.addition.
E.none of the above
Answer Key: A
Question 21 of 23
2.0/ 2.0 Points
Which of the following compounds is an alkyne?
A.C3H6
Correct B.C2H2
C.C2H6
D.C5H12
E.none of the above
Answer Key: B
Part 8 of 8 - 4.0/ 4.0 Points
Question 22 of 23
2.0/ 2.0 Points
Lipids include all of the following compounds EXCEPT:
A.phospholipids.
B.steroids.
C.glycolipids.
Correct D.carboxylic acids.
E.All of the above are lipids.
Answer Key: D
Question 23 of 23
2.0/ 2.0 Points
Which of the statements regarding phospholipids is FALSE?
A.A phospholipid has nearly the same structure as a triglyceride.
B.A cell membrane is a bilayer of phospholipids and glycolipids.
C.Phospholipids are common in the cell membrane.
D.Unlike triglycerides, phospholipids have a polar region.
Correct E.All of the above statements are true.
Answer Key: E
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