Download Review Sheet Test 2

State University of New York at Oswego
Chemistry Department
Che 101 Introductory Chemistry
Review Sheet Test 2
March, 2011
1. The empirical formula of a compound is CH2O, and its mass is 360 g/mol. Calculate
its molecular formula.
2. What is the sum of the coefficients when the following equation is balanced using the
smallest set of whole numbers for the coefficients?
BaSO4(s)
+
K3PO4(aq)
→
Ba3(PO4)2(s)
+
K2SO4(aq)
3. Classify the following reaction:
Zn(s)
+
2HCl(aq)
→
A. Precipitation
B. Acid-base
C. Oxidation-reduction
H2(g)
ZnCl2(aq)
D. Single displacement
E. Both C and D are correct
4. Which contains the smallest number of moles?
A. 1 g of P
D. 1 g of U
B. 1 g of Al
E. All contain the same number of moles.
C. 1 g of Fe
5. What is the correct name for N2O4?
A. nitrogen(IV) oxide
D. tetranitrogen dioxide
B. nitrogen(II) oxide
E. dinitrogen tetroxide
C. dinitrogen oxide
6. Convert g of O2 to moles of O2.
7. What is the chemical formula for copper(II) acetate?
8. Calculate the number of Cl atoms in a 10 g sample of calcium chloride.
9. A compound has a molar mass of 110.1 g/mol, and has a percent composition by mass
of 65.43% C, 5.45% H, and 29.09% O. Determine the empirical and molecular
formulas.
10. Write the molecular equation, the complete ionic equation, and the net ionic equation
for the following reaction: Aqueous solutions of copper(II) nitrate and sodium
hydroxide are mixed together.
11. Calculate the mass in grams of 0.5 mol of H2SO4.
12. Balance the following equation and classify the reaction.
Sb(s)
+
O2(g) →
SbO2(s)