CHEM 116 original copy for FINAL EXAM 2026 REVIEW SHEET |General Chemistry University of Massachusetts, Boston

CHEM 116 original copy for FINAL EXAM 2026 REVIEW SHEET |General Chemistry University of
Massachusetts, Boston




Chem 116 Final Exam Review Sheet

Chapter 10

1. The National Weather Service routinely supplies atmospheric pressure data to help pilots
set their altimeters. The units the NWS uses for atmospheric pressure are inches of
mercury. A barometric pressure of 30.51 inches of mercury corresponds to
kPa.
A. 16.01
B. 775
C. 103.3
D. 77.50
E. 1.020
2. A sample of gas (24.2 g) initially at 4.00 atm was compressed from 8.00 L to 2.00 L at
constant temperature. After the compression, the gas pressure was atm.
A. 1.00
B. 16.00
C. 2.00
D. 4.00
E. 8.00
3. A balloon originally had a volume of 4.39 L at 44 °C and a pressure of 729 torr. The
balloon must be cooled to °C to reduce its volume to 3.78 L (at constant
pressure).
A. 38
B. 0
C. 273
D. 546
E. 72.9
4. The amount of gas that occupies 60.82 L at 31 °C and 367 mmHg is mol.
A. 11.7
B. 1.18
C. 0.850
D. 894
E. 0.120
5. At a temperature of °C, 0.444 mol of CO gas occupies 11.8 L at 889 torr.
A. 106
B. 379
C. 32
D. 73
E. 14
6. A sample of gas (1.9 mol) is in a flask at 21 °C and 697 mmHg. The flask is opened and
more gas is added to the flask. The new pressure is 795 mmHg and the temperature is
now 26 °C. There are now mol of gas in the flask.
A. 0.28
B. 2.1
C. 1.6

, D. 3.5
E. 2.9
7. The mass of nitrogen dioxide contained in a 4.32 L vessel at 48 °C and 141600 Pa is
g.
A. 5.35 × 104
B. 9.46 × 10-2
C. 10.5
D. 70.5
E. 53.5
8. The molecular weight of a gas that has a density of 7.10 g/L at 25.0 °C and 1.00 atm
pressure is g/mol.
A. 28.0
B. 5.75 × 10-3
C. 14.6
D.
6.85 × 10-2
E. 174
9. The volume of hydrogen gas at 38.0 °C and 763 torr that can be produced by the reaction
of 4.33 g of zinc with excess sulfuric acid is L.
A. 2.71 × 10-4
B. 0.592
C. 2.84
D. 1.69
E. 3.69 × 104
10. Ammonium nitrite undergoes thermal decomposition to produce only gases:
NH4NO2 (s) → N2 (g) + 2H2O (g)
What volume (L) of gas is produced by the decomposition of 35.0 g of NH4NO2 (s) at
525 ° C and 1.5 atm?
A. 15
B. 72
C. 160
D. 24
E. 47
11. In a gas mixture of He, Ne, and Ar with a total pressure of 8.40 atm, the mole fraction of
Ar is if the partial pressures of He and Ne are 1.50 and 2.00 atm,
respectively.
A. 0.357
B. 0.417
C. 0.583
D. 0.238
E. 0.179
12. The root-mean-square speed of CO at 113 °C is m/s.
A. 31.5
B. 317
C. 586
D. 993
E. 58.3

, 13. A sample of O2 gas (2.0 mmol) effused through a pinhole in 5.0 s. It will take
s for the same amount of CO2 to effuse under the same conditions.
A. 0.23
B. 3.6
C. 5.9
D. 6.9
E. 4.3

Chapter 11

14. Based on molecular mass and dipole moment of the five compounds in the table below,
which should have the highest boiling point?




A. CH3CN
B. CH3CH2CH3
C. CH3OCH3
D. CH3Cl
E. CH3CHO
15. Of the following substances, only has London dispersion forces as its only
intermolecular force.
A. CH3OH
B. NH3
C. H2S
D. CH4
E. HCl
16. Which one of the following should have the lowest boiling point?
A. PH3
B. H2S
C. HCl
D. SiH4
E. H2O
17. In which of the following molecules is hydrogen bonding likely to be the most significant
component of the total intermolecular forces?
A. CH4
B. C5H11OH
C. C6H13NH2
D. CH3OH
E. CO2
18. Of the following substances, only has hydrogen bonding.