SCIN131 Final Exam Multiple Choice

SCIN131 - Intro to Chemistry Final Exam Review - Multiple Choice
Return to Assessment List

Part 1 of 8 -
6.0/ 6.0 Points

Question 1 of 23
2.0/ 2.0 Points
How many core electrons are in a chlorine atom?

A.10

B.7

C.17

D.1

E.none of the above

Answer Key: A

Question 2 of 23
2.0/ 2.0 Points
Which subshell letter corresponds to a spherical orbital?

A.f

B.d

C.p

D.s

E.not enough information

Answer Key: D

Question 3 of 23
2.0/ 2.0 Points
Consider the electron configuration of the ion to determine which ion shown below has an incorrect ionic charge?

A.Se2-

B.Ba2+

C.Al3-

D.Rb+

E.none of the above

Answer Key: C

Part 2 of 8 -
4.0/ 6.0 Points

Question 4 of 23
0.0/ 2.0 Points
The correct Lewis structure for BF3 would have exactly:

A.1 double bond.

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
Which compound listed below will dissolve in carbon tetrachloride, CCl4?

A.NH3

B.CS2

C.NaCl

D.all of the compounds

E.none of the compounds

Answer Key: B

Question 6 of 23
2.0/ 2.0 Points
Which substance listed below is a polar molecule?

A.NH41+

B.SiCl4

C.Cl2O

D.all of the compounds

E.none of the compounds

Answer Key: C

Part 3 of 8 -
6.0/ 6.0 Points

Question 7 of 23
2.0/ 2.0 Points
A gas sample occupies 3.50 liters of volume at 20.°C. What volume will this gas occupy at 100.°C (reported to three significant figures)?

A.2.75 L

B.17.5 L

C.0.224 L

D.4.46 L

E.none of the above

Answer Key: D

Question 8 of 23
2.0/ 2.0 Points
What is the equivalent pressure of 968 mm Hg in units of atm?

A.0.785 atm

B.968 atm

C.1.30 atm

D.1.27 atm

E.none of the above

Answer Key: D

Question 9 of 23
2.0/ 2.0 Points
What is the equivalent pressure of 0.905 atm in units of mm Hg?

A.840

B.0.905

C.13.3

D.688

E.none of the above

Answer Key: D

Part 4 of 8 -
6.0/ 6.0 Points

Question 10 of 23
2.0/ 2.0 Points
The reason for many of the unique properties of water is:

A.the ability to form hydrogen bonds.

B.high surface tension and low volatility.

C.dispersion forces.

D.moderate viscosity and expanding upon freezing.

E.all of the above

Answer Key: A

Question 11 of 23
2.0/ 2.0 Points
How many grams of C4H10O can be melted by 2.00 x 103 J? Given

A.3.64

B.20.4

C.74.1

D.14.5

E.none of the above

Answer Key: B

Question 12 of 23
2.0/ 2.0 Points
Which intermolecular forces are found in CCl4?

A.hydrogen bonding

B.dipole-dipole forces

C.X-forces

D.dispersion forces

E.none of the above

Answer Key: D

Part 5 of 8 -
6.0/ 6.0 Points

Question 13 of 23
2.0/ 2.0 Points
What molarity should the stock solution be if you want to dilute 25.0 mL to 2.00 L and have the final concentration be 0.103 M?

A.0.243 M

B.8.24 M

C.4.12 M

D.0.206 M

E.none of the above

Answer Key: B

Question 14 of 23
2.0/ 2.0 Points
When an ionic compound dissolves in water:

A.the positive end of water dipoles attract the negative ions.

B.the solvent-solute attractive forces overcome the solute-solute attractions.

C.the negative end of water dipoles attract the positive ions.

D.each of the above (A, B, and C) occurs.

E.none of the above (A, B, or C) occurs.

Answer Key: D

Question 15 of 23
2.0/ 2.0 Points
What is the mass percent of a solution prepared by dissolving 18.9 grams of solid into 39.5 grams of water?

A.58.4%

B.47.8%

C.32.4%

D.The identity of the compound must be known.

E.none of the above

Answer Key: C

Part 6 of 8 -
6.0/ 6.0 Points

Question 16 of 23
2.0/ 2.0 Points
What is the concentration of the hydronium ions in a neutral solution?

A.0.0 M

B.< 1.0 x 10-7 M

C.> 1.0 x 10-7 M

D.1.0 x 10-7 M

E.1.0 x 10-14 M

Answer Key: D

Question 17 of 23
2.0/ 2.0 Points
A 25.0 ml sample of 0.105 M HCl was titrated with 31.5 mL of NaOH. What is the concentration of the NaOH?

A.0.075 M

B.0.0833 M

C.0.132 M

D.0.105 M

E.none of the above

Answer Key: B

Question 18 of 23
2.0/ 2.0 Points
Which solution below has the highest concentration of hydroxide ions?

A.pH = 3.21

B.pH = 7.00

C.pH = 7.93

D.pH = 12.49

E.pH = 10.12

Answer Key: D

Part 7 of 8 -
4.0/ 6.0 Points

Question 19 of 23
0.0/ 2.0 Points
Ethyl propanoate is a(n):

A.ketone.

B.ester.

C.carboxylic acid.

D.ether.

E.none of the above

Answer Key: B

Question 20 of 23
2.0/ 2.0 Points
Which is the name of C6H14?

A.n-heptane

B.n-hexane

C.n-butane

D.n-pentane

E.all of the above

Answer Key: B

Question 21 of 23
2.0/ 2.0 Points
Which formula represents butane?

A.C3H8

B.C2H6

C.C7H16

D.C4H10

E.all of the above

Answer Key: D

Part 8 of 8 -
4.0/ 4.0 Points

Question 22 of 23
2.0/ 2.0 Points
Cys-Ala-Val-Cys-Gln is an example of which type of structure?

A.Primary Structure

B.Secondary Structure

C.Tertiary Structure

D.Quaternary Structure

E.Pental Structure

Answer Key: A

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.

E.All of the above statements are true.

Answer Key: E