Name: Betelham
Chemistry 151 Summer 2025 Final Exam
INSTRUCTIONS:
Please put your name in header on the first page.
Do not submit pages 12 – 15. (delete before submitting)
The test has 50 multiple choice questions worth 2.0 points each.
_____1. An atom has 118 electrons and a mass number of 294. The atom has how many
neutrons?
A. 118
B. 294
C. 412
D. 176
E. 0
_____2. Consider the picture below. The solid added had a mass of 44.953 g/mL. What is the
density of solid?
A. 3.0 g/mL
B. 4.1 g/mL
C. 19 g/mL
D. 12 g/mL
E. 15 g/mL
_____3. Which compound listed is a molecular compound?
A. NaCl B. FeI3 C. KBr D. MgO E. C2H4
_____4. How many electrons are present in Fe2+?
A. 27 B. 28 C. 24 D. 25 E. 60
Page 1 of 13
CHM 151 Final Exam Su 2025
, Name: Betelham
_____5. Which of the following substances is predicted to be insoluble (unable to dissolve) in
water?
A. KBr
B. CaSO4
C. FeSO4
D. NH4NO3
E. NaNO3
_____6. The spectator ion(s) in the following reaction is (are)?
Ba(NO3)2(aq) + Na2SO4(ag) BaSO4(s) + 2NaNO3 (aq)
A. Na+ and Cl-
B. Ba2+ and SO42-
C. Cl- and SO42-
D. Na+ and Ba2+
E. Na+, NO3-
_____7. What is the net ionic equation for the following reaction?
Na2CO3(s) + 2HCl(aq)
A. 2NH4+(aq) + 2Cl-(aq) 2NH4Cl (s)
B. 2Na+(aq) + 2Cl-(aq) 2NaCl(s)
C. 2Ba2+(aq) + 2Na+(aq) + 3CO32-(aq) Ba2(Na)2(CO3)3(s)
D. Na2CO3(s) + 2H+(aq) 2Na+(aq) + CO2(g) + H2O(l)
E. H+(aq) + OH-(aq) H2O(l)
_____8. What is the name of the anion with a formula of ClO2-?
A. chlorate
B. chlorite
C. hypochlorite
D. perchlorate
E. chloride
_____9. In the reaction: Mg(s) + Cu2+(aq) Mg2+(aq) + Cu(s); what chemical material is
reduced?
A. Mg
B. Cu2+
C. Mg2+
D. Cu
E. H2O2
Page 2 of 13
CHM 151 Final Exam Su 2025
Chemistry 151 Summer 2025 Final Exam
INSTRUCTIONS:
Please put your name in header on the first page.
Do not submit pages 12 – 15. (delete before submitting)
The test has 50 multiple choice questions worth 2.0 points each.
_____1. An atom has 118 electrons and a mass number of 294. The atom has how many
neutrons?
A. 118
B. 294
C. 412
D. 176
E. 0
_____2. Consider the picture below. The solid added had a mass of 44.953 g/mL. What is the
density of solid?
A. 3.0 g/mL
B. 4.1 g/mL
C. 19 g/mL
D. 12 g/mL
E. 15 g/mL
_____3. Which compound listed is a molecular compound?
A. NaCl B. FeI3 C. KBr D. MgO E. C2H4
_____4. How many electrons are present in Fe2+?
A. 27 B. 28 C. 24 D. 25 E. 60
Page 1 of 13
CHM 151 Final Exam Su 2025
, Name: Betelham
_____5. Which of the following substances is predicted to be insoluble (unable to dissolve) in
water?
A. KBr
B. CaSO4
C. FeSO4
D. NH4NO3
E. NaNO3
_____6. The spectator ion(s) in the following reaction is (are)?
Ba(NO3)2(aq) + Na2SO4(ag) BaSO4(s) + 2NaNO3 (aq)
A. Na+ and Cl-
B. Ba2+ and SO42-
C. Cl- and SO42-
D. Na+ and Ba2+
E. Na+, NO3-
_____7. What is the net ionic equation for the following reaction?
Na2CO3(s) + 2HCl(aq)
A. 2NH4+(aq) + 2Cl-(aq) 2NH4Cl (s)
B. 2Na+(aq) + 2Cl-(aq) 2NaCl(s)
C. 2Ba2+(aq) + 2Na+(aq) + 3CO32-(aq) Ba2(Na)2(CO3)3(s)
D. Na2CO3(s) + 2H+(aq) 2Na+(aq) + CO2(g) + H2O(l)
E. H+(aq) + OH-(aq) H2O(l)
_____8. What is the name of the anion with a formula of ClO2-?
A. chlorate
B. chlorite
C. hypochlorite
D. perchlorate
E. chloride
_____9. In the reaction: Mg(s) + Cu2+(aq) Mg2+(aq) + Cu(s); what chemical material is
reduced?
A. Mg
B. Cu2+
C. Mg2+
D. Cu
E. H2O2
Page 2 of 13
CHM 151 Final Exam Su 2025
