Wesley Minor
Mock Exam 3
1. What type of reaction is where water and carbon dioxide are products?
A. Combustion
B. Single replacement
C. Double displacement
D. None
2. What is the mass of one mole of potassium hydroxide?
A. 47.98 g B. 56.11 g
C. 54.76 g
D. 48.89 g
3. What is the generic form of a combination reaction?
A. AB + CD  AD + CB
B. AB  A + B
C. A + B  AB
D. None
4. How many moles of O2 combine with 4 moles of nickel metal to form nickel (II) oxide?
A. 1 B. 2 C. 3 D. 4
5. 87.36 grams of NF3 react as shown below. How many grams of N2 are produced?
NF3  N2 + F2
A. 17.24 g
B. 23.89 g
C. 19.39 g
D. None
6. A reaction occurs as described by the chemical equation shown.
LiHSO4 + O2  LiSO4 + H2O
If 0.744 moles of lithium hydrogen sulfate are consumed in the reaction, how many moles
of water would be formed?
A. 0.186 moles B. 0.372 moles C. 0.744 moles D. 1.488 moles
7. In the chemical equation shown, which of the molecules is dissolved in water?
Li (s) + H2 O (l) LiOH (aq) + H2 (g)
A. Li
B. H2O
C. LiOH
D. H2
8. How many iron atoms are in 3.82 moles of iron?
A. 1.28 x 1026 atoms B. 1.56 x 1023 atoms C. 2.30 x 1024 atoms D. 4.12 x 1022 atoms
9. What are the coefficients when the following chemical equation is balanced?
______ Al + ______ Sr(ClO2 )2  _______ Al(ClO2 )3 + _______ Sr
A. 2, 3, 3, 2
B. 2, 1, 1, 1
C. 2, 3, 1, 3 D. 2, 3, 2, 3
10. Which of the following is closest to the molar mass of zinc(II) sulfite?
A. 100 B. 150 C. 180 D. 200
Wesley Minor
Mock Exam 3
11. In the balanced chemical equation describing a double-replacement reaction between
potassium hydrogen phosphate and ammonium chloride, what is the coefficient in front of
the product containing potassium?
A. one B. two C. three D. four
12. To carry out a neutralization reaction, 3.7 moles of beryllium hydroxide is added to a
solution containing 5.2 moles of hydrogen chloride. What is the limiting reactant?
A. beryllium chloride B. hydrogen hydroxide C. beryllium hydroxide D. hydrogen chloride
13. Which of the following is closest to the mass of 3.82 moles of carbon tetrafluoride?
A. 225 grams B. 150 grams C. 350 grams D. 250 grams
14. What is oxidation?
A. Gain of electrons B. Loss of electrons C. Sharing of electrons
D. None
15. What type of bonding occurs in water?
A. Hydrogen B. Ion C. London
D. Metal
16. Which of the following is a strong electrolyte?
A. NH3
B. HCl
C. LiOH
D. RbOH
17. Which of the following will increases solubility?
A. Increasing pressure
B. Increasing temperature C. Decreasing temperature D. A&B
18. What is the molarity when you have 123 grams of NaCl in a solution of water that is 1.3
L?
A. 2.4 B. 1.6 C. 1.2 D. 2.8
19. If you have 20 grams of NaCl in a 250 g salt solution, what is the percent by mass of
NaCl?
A. 8% B. 10% C. 30% D. 45%
20. Milk is a
A. Suspension
B. Mixture
C. Solvent
D. Colloid