Name: _____________________________________ Date: _________________
CHM 1025, Summer 2016, Exam 2 Review Packet (Broward Teaching Center)
1. A neutral atom of uranium-239 contains how many neutrons?
a. 146
b. 147
c. 148
d. 149
e. 150
2. Which of the following is a weak oxyacid?
a. H2SO4
b. HNO3
c. HClO2
d. HF
e. HClO3
3. Which of the following contains both ionic and covalent bonds?
a. KBr
b. CO2
c. MgI2
d. C6H12O6
e. NH4Cl
4. How many grams of potassium are in 25g of potassium carbonate?
a. 6.8
b. 14.1
c. 7.05
d. 13.9
e. 12.2
5. What is the % mass of Oxygen in CH3OH
a. 10%
b. 25%
c. 50%
d. 75%
e. 99%
6. Which of the following is the correct net ionic equation for the reaction of aqueous
silver nitrate and aqueous potassium chloride?
f. Ag+ (aq) + Cl- (aq)  AgCl (s)
g. AgNO3 (aq) + KCl (aq)  KNO3 (aq) + AgCl (s)
h. K+ (aq) + NO3—(aq)  KNO3 (aq)
i. 2Ag+ (aq) + 2Cl- (aq)  2AgCl (s)
j. AgNO3 (aq) + KCl (aq)  AgCl (s)
7. By how many electrons does an atom get reduced in the following reaction?
Cu (s) + 2AgNO3 (aq)  2Ag (s) + Cu(NO3)2 (aq)
f. 0
g. 1
h. 2
i. 3
j. 4
8. Balance the following equation:
__FeBr3 + __H2SO4  __Fe2(SO4)3 + __HBr
a. 3, 1, 2, 5
b. 2, 3, 1, 6
c. 1, 2, 3, 5
d. 4, 1, 1, 1
e. 2, 5, 1, 6
9. Which of the following has a tetrahedral geometry
a. NH3
b. N2
c. CO2
d. CH4
e. BF3
10. Which of the following would be the correct formula for the compound Iron (III)
Carbonate?
a. Ir3Ca
b. IrCO3
c. Fe3(CO3)2
d. Fe2(CO3)3
e. FeCO3
11. How many grams of KCl are needed to make 300mL of a 4M solution?
a. 91.2
b. 89.5
c. 35.6
d. 61.9
e. 80.5
12. What volume does a 50g sample of ethanol create given that its density is 0.789 g/mL in
microliters?
a. 6.3 x 103
b. 5.1 x 103
c. 6.3 x 104
d. 5.1 x 104
e. 5.1 x 105
13. Calculate the number of oxygen atoms in 31.7 g of Iron (II) sulfate.
a. 7.46 x 1023
b. 3.23 x 1023
c. 1.45 x 1023
d. 4.07 x 1023
e. 5.03 x 1023
14. Which of the following contains the incorrect naming for the given compound.
a. PF5 – Phosphorus Pentaflouride
b. MgCl2 – Magnesium Dichloride
c. CaCO3 – Calcium Carbonate
d. HCl – Hydrochloric Acid
e. H2O – Dihydrogen Monoxide
15. A compound contains 13.5 g Ca, 10.8 g of O, and 0.675 g H. What is the empirical
formula of the compound?
a. Ca(OH)2
b. Ca2(OH)3
c. Ca3O2H2
d. CaOH
e. Ca2O2H2
16. Which element has the biggest size and ionization energy respectively?
S Cl Sn Ne Te
a. Sn and Ne
b. Cl and Te
c. S and Ne
d. Sn and Cl
e. Ne and S
17. What should be the expected result of a reaction between Magnesium metal and
oxygen gas.
a. Mg3O2
b. MgO
c. Mg2O2
d. Mg2O3
e. MgO
18. If 5g of nitrogen gas and 5g of hydrogen gas react to form ammonia what mass of the
reagent in excess remains?
a. 1.08 g
b. 3.17 g
c. 2.56 g
d. 3.92 g
e. 6.11 g
19. After a reaction with an acidic and basic solution, we identify the conjugate acid to be
carbonic acid. What is the formula of the base?
a. HCO3b. H2CO3
c. HCO32+
d. HClO4
e. H2CO2
20. Which of the following compounds would be insoluble?
a. NaCl
b. NH4I
c. LiNO3
d. BaSO4
e. Ba(OH)2