Answers to HW Chapter 7
Section review page 215

1. It indicates the types and numbers of atoms or ions present in a formulas
unit or molecule of a compound

2. a. AlBr3
b. Na2O
c. MgI2
d. PbO
e. SnI2
f. Fe2S3
g. Cu(NO3)2
h. (NH4)2SO4

3. a. Sodium iodide
b. magnesium sulfide
c. calcium oxide
d. potassium sulfide
e. copper(I)bromide
f. Iron (II) chloride

4. a. BaS
b. NaOH
c. Pb(NO3)2
d. KMnO4
e. FeSO4
f. P2O3
g. S2Cl2
h. CSe2
i. CH3COOH
j. HClO3
k. H2SO3
l. H3PO4