CHEM 151 FINAL EXAM QUESTIONS AND VERIFIED
ANSWERS
Which of the following are molecules?
a. oxygen
b. water
c. sodium chloride
d. MgCl2
e. the sulfate ion
f. a and b
g. a, b, and e
h. all of the above
I. none of the above - Answers - g. a, b, and e
which of the following are not homogeneous mixtures?
a. the air in a balloon
b. a solution of sodium chloride dissolved in water
c. a glass of vodka (containing water and ethanol, which are completely miscible)
d. a tank of pure oxygen
e. none of the above
f. all of the above - Answers - d. a tank of pure oxygen
which of the following are chemical properties?
a. temperature
b. density
c. volume
d. inflammability (the ability to burn)
e. state (solid, liquid, gas)
f. none of the above
g. all of the above - Answers - d. inflammability (the ability to burn)
Aluminum reacts with a certain nonmetallic element to form a compound with the
general formula AlX3. Element X is a diatomic gas at room temperature. X is in which
group on the periodic table?
a. Alkali Metal
b. Alkaline earth metal
c. chalcogen
d. transition metal
e. nonmetal
f. halogen
g. noble gas
h. lanthanide
I. actinide - Answers - f. halogen
, When 54 g of aluminum react with an excess element X (from the previous problem),
534g of AlX3 are produced. What is X?
a. F
b. Cl
c. Br
d. I
e. S
f. Se
g. K
h. Rb
I. Ca
j. Sr - Answers - c. Br
Miliken's oil drop experiment established for the first time:
a. the charge of a proton
b. the mass of the neutron
c. the charge of the electron
d. the charge to mass ratio of the electron
e. the existence of the nucleus
f. all of the above
g. none of the above - Answers - c. the charge of the electron
the density of acetic acid is 1.05 g/mL. what is the volume of 275 g of acetic acid?
a. 3.46x10^-3 mL
b. 3.82x10^-3 mL
c. 2.62x10^2 mL
d. 2.76x10^2 mL
e. 2.89x10^2 mL
f. none of the above - Answers - c. 2.62x10^2
how many electrons are in 48Ti4+?
a. 18
b. 22
c. 26
d. 44
e. 52
f. 48
g. 4
h. 8 - Answers - a. 18
which of the following are acids?
a. NaC2H3O2
b. NaOH
c. H2N2
d. H2SO4
ANSWERS
Which of the following are molecules?
a. oxygen
b. water
c. sodium chloride
d. MgCl2
e. the sulfate ion
f. a and b
g. a, b, and e
h. all of the above
I. none of the above - Answers - g. a, b, and e
which of the following are not homogeneous mixtures?
a. the air in a balloon
b. a solution of sodium chloride dissolved in water
c. a glass of vodka (containing water and ethanol, which are completely miscible)
d. a tank of pure oxygen
e. none of the above
f. all of the above - Answers - d. a tank of pure oxygen
which of the following are chemical properties?
a. temperature
b. density
c. volume
d. inflammability (the ability to burn)
e. state (solid, liquid, gas)
f. none of the above
g. all of the above - Answers - d. inflammability (the ability to burn)
Aluminum reacts with a certain nonmetallic element to form a compound with the
general formula AlX3. Element X is a diatomic gas at room temperature. X is in which
group on the periodic table?
a. Alkali Metal
b. Alkaline earth metal
c. chalcogen
d. transition metal
e. nonmetal
f. halogen
g. noble gas
h. lanthanide
I. actinide - Answers - f. halogen
, When 54 g of aluminum react with an excess element X (from the previous problem),
534g of AlX3 are produced. What is X?
a. F
b. Cl
c. Br
d. I
e. S
f. Se
g. K
h. Rb
I. Ca
j. Sr - Answers - c. Br
Miliken's oil drop experiment established for the first time:
a. the charge of a proton
b. the mass of the neutron
c. the charge of the electron
d. the charge to mass ratio of the electron
e. the existence of the nucleus
f. all of the above
g. none of the above - Answers - c. the charge of the electron
the density of acetic acid is 1.05 g/mL. what is the volume of 275 g of acetic acid?
a. 3.46x10^-3 mL
b. 3.82x10^-3 mL
c. 2.62x10^2 mL
d. 2.76x10^2 mL
e. 2.89x10^2 mL
f. none of the above - Answers - c. 2.62x10^2
how many electrons are in 48Ti4+?
a. 18
b. 22
c. 26
d. 44
e. 52
f. 48
g. 4
h. 8 - Answers - a. 18
which of the following are acids?
a. NaC2H3O2
b. NaOH
c. H2N2
d. H2SO4
