Final Review – Chemistry 101
You should know the density, specific heat capacity, dilution, and ideal gas equations.
1) Which of the following elements is a transition metal?
a) V
b) Mg
c) Si
d) Br
2) Convert 0.0825 kg into milligrams.
a) 8.25×101 mg
c) 8.25×10–1 mg
b) 8.25×104 mg
d) 8.25×103 mg
3) The volume of a flask is measured to be 1.10 L. When filled with a gas, the mass is 837.6 g. The
mass of the flask is 836.2 g when empty. Calculate density to the correct number of significant
figures.
a) 0.761 g/L
b) 1.27 g/L
c) 1.3 g/L
d) 0.79 g/L
4) Calculate the volume of an irregularly shaped piece of copper with a mass of 2.25 mg. The
density of copper is known to be 8.96 g/cm3.
a) 2.51×10–4 g/cm3
b) 3.98 g/cm3
c) 20.2 g/cm3
d) 2.51×10–1 g/cm3
5) How many protons, neutrons, and electrons are present in 27Al3+?
a) p = 13, n = 27, e = 10
b) p = 13, n = 14, e = 10
c) p = 14, n = 13, e = 10
d) p = 27, n = 13, e = 24
6) Which group of the periodic table contains the element magnesium?
a) Alkali metal
b) Alkaline earth
c) Halogen
d) Noble gas
7) How many electrons are in the calcium ion?
a) 18
c) 20
b) 19
d) 21
8) Which of the following atoms or ions does not possess a noble gas configuration?
a) Mg2+
b) Cs+
c) Xe
d) Br
9) When aluminum reacts with chlorine, the formula of the expected compound is
a) AlCl2
b) AlCl
c) AlCl3
d) Al3Cl
10) Which is the correct formula for ammonium nitrate?
a) NH3NO2
b) NH4(NO3)2
c) NH3NO3
d) NH4NO3
11) Which of the following formula-name pairs are correct?
a) A and B
c) B and C
A) K2SO4 – potassium sulfate
B) Ca(NO3)2 – calcium nitrate
C) PF3 – phosphorus fluoride
b) A and C
d) A, B, and C (all) are correct
Version: 2014 Fall
Final Review – Chemistry 101
12) The specific heat of aluminum is 0.89 J/gºC. If a 45 g piece of aluminum foil at room temperature
(25ºC) is placed over a dish, what temperature will the foil be after it absorbs 6000 J of heat?
a) 119ºC
b) 240ºC
c) 175ºC
d) 150ºC
13) Calculate the mass of 0.250 mol of MgSO4.
a) 18.1 g
c) 30.1 g
b) 72.4 g
d) 3.00 g
14) Calculate the number of moles in 1.00 g of Ca3(PO4)2.
a) 3.22×10–3 mol
b) 4.64×10–3 mol
c) 3.58×10–2 mol
d) 4.35×10–3 mol
15) If the mass percentages of each element are as follows, what is the empirical formula of
formaldehyde? (Elemental analysis: 40.0%C 6.7%H 53.3%O)
a) CHO
b) CHO2
c) C2HO
d) CH2O
16) Which of the following empirical formulas for ionic compounds is not correct?
a) KBr
b) MgO
c) Na2S
d) CaF
17) Which of the following ionic compounds has the largest lattice energy?
a) K2S
b) Al2O3
c) KBr
d) CaBr2
18) The ground state electron configuration of Br is:
a) [Ar]4s24d104p5
c) [Ar]3s23p5
b) [Ar]4s23d104p5
d) [Ar]4s23d104p6
19) How many orbitals are in the third shell of a many-electron atom?
a) 3
b) 8
c) 9
d) 18
20) Calculate the mass percent of aluminum in Al2O3·3H2O.
a) 35%
b) 17%
c) 65%
d) None is within 5%
21) The reaction of chlorine with aluminum should have the following stoichiometry.
a) Al + 3 Cl  AlCl3
b) 2 Al + 3 Cl2  2 AlCl3
c) Al + Cl2  AlCl2
d) Al + 2 Cl  AlCl2
22) How many grams of H2O are required to produce 13 g of C2H2 according to the following
equation?
CaC2 + 2 H2O  Ca(OH)2 + C2H2
a) 36 g
c) 26 g
b) 18 g
d) 9.0 g
Version: 2014 Fall
Final Review – Chemistry 101
23) Calculate the theoretical yield of CaBr2 when 5.44 g of CaSO4 and 7.62 g of KBr react according
to the following equation?
CaSO4 + 2 KBr  CaBr2 + 2 K2SO4
a) 2.00 g
c) 1.00 g
b) 3.20 g
d) 6.40 g
24) Calculate the molarity of a solution prepared by dissolving 14.7 g of solid NaOH in enough water
to make 1.50 L of solution.
a) 9.80 M
b) 0.368 M
c) 22.0 M
d) 0.245 M
25) Identify the spectator ion(s) in the following reaction:
Na2CO3(aq) + Ca(NO3)2(aq)  CaCO3(s) + 2 NaNO3(aq)
a) Na+(aq) only
c) Na+(aq) and NO3– (aq)
b) CO3 2– (aq) only
d) Ca2+(aq) and CO3 2– (aq)
26) Calculate the energy of a photon of light with a wavelength of 532 nm.
a) 1.60×102 J
b) 3.74×10–28 J
–19
c) 3.74×10 J
d) 1.60×10–7 J
27) Which one of the following bonds would you expect to be the most polar bond?
a) O-H
b) N-C
c) O-S
d) C-B
28) The properties of a real gas are most likely to deviate from the properties predicted for an ideal
gas when:
a) Pressure is low
b) Temperature is high and pressure is low
c) Temperature is high
d) Temperature is low and pressure is high
29) What is the volume of 4.7 moles of H2 at 22ºC and 0.90 atm?
a) 126 L
b) 215 L
c) 7.6 L
d) 115 L
30) A balloon filled with helium has a volume of 1.60 L at 1.00 atm and 25ºC. What will be the volume
after cooling in liquid nitrogen to –196ºC while maintaining a pressure of 1.00 atm?
a) 6.19 L
b) 0.413 L
c) 12.5 L
d) 7.84 L
Version: 2014 Fall
Final Review – Chemistry 101
True / False – more review content (all multiple choice on final exam)
31) Metallic elements tend to be hard and brittle.
32) Fluorine is the most reactive nonmetallic element.
33) Condensation is an exothermic process.
34) The boiling point of an aqueous salt solution is higher than the boiling point of pure water.
35) An exothermic process involves the transfer of heat from the surroundings to the system.
36) A photon of 233 nm light has more energy than a photon of 617 nm light.
37) A photon of 15 nm light has a higher frequency than a photon of 15 m light.
38) Ultraviolet light has less energy per photon than infrared light.
39) The molar mass of a gas is directly proportional to its density.
40) All strong acids and strong bases are strong electrolytes.
41) The pH of a solution of the strong base, NaOH, would be expected to be less than seven (7).
42) Oxidation involves the loss of electrons.
43) Salts of metals can be oxidized to form the pure elemental metal.
44) Rutherford’s gold foil experiment demonstrated the existence of neutrons.
45) The Lewis structure of ammonia, NH3, contains 3 lone pairs (non-bonding pairs) of electrons.
Key
1) a
2) b
3) c
4) a
5) b
6) b
7) a
8) d
9) c
10) d
11) a
12) c
13) c
14) a
15) d
Version: 2014 Fall
Final Review – Chemistry 101
16) d
17) b
18) b
19) c
20) a
21) b
22) b
23) d
24) d
25) c
26) c
27) a
28) d
29) a
30) b
31) F
32) T
33) T
34) T
35) F
36) T
37) T
38) F
39) T
40) T
41) F
42) T
43) F
44) F
45) F
Version: 2014 Fall