Problema 10
How many atoms are specified by each of these prefixes: mono-, di-, tri-, tetra-, penta-, hexa-?
- Classify each compound as organic or inorganic: a. C8H18 b. CH3NH2 c. CaO d. FeCO3
Problema 11
Problema 25e
Calculate the percentage by mass of oxygen in the following compounds: e. digitoxin, C41H64O13
Problema 26a
Determine the number of each type of atom in each formula. a. Sr2HPO4
Problema 26b
Determine the number of each type of atom in each formula. b. Co(ClO4)2
Problema 26c
Determine the number of each type of atom in each formula. c. Cr2(SO4)3
Problema 28a
Write a chemical formula for each molecular model. (See Appendix IIA for color codes.) (a)
Problema 28c
Write a chemical formula for each molecular model. (See Appendix IIA for color codes.) (c)

Problema 29
Classify each element as atomic or molecular. a. bromine b. titanium c. oxygen d. potassium
Problema 30
Identify the elements that have molecules as their basic units. a. nitrogen b. argon c. hydrogen d. helium
Problema 31
Classify each compound as ionic or molecular. a. CO2 b. NiCl2 c. Nal d. PCl3
Problema 32
Classify each compound as ionic or molecular. a. CF2Cl2 b. CCl4 c. PtO2 d. SO3
Problema 33a
Based on the molecular views, classify each substance as an atomic element, a molecular element, an ionic compound, or a molecular compound.
Problema 34
Based on the molecular views, classify each substance as an atomic element, a molecular element, an ionic compound, or a molecular compound.

Problema 36
Write a formula for the ionic compound that forms between each pair of elements. a. silver and chlorine b. sodium and sulfur c. aluminum and sulfur d. potassium and chlorine
Problema 37
Write a formula for the compound that forms between potassium and each polyatomic ion. a. acetate b. phosphate c. sulfate d. nitrate
Problema 39c
Name each ionic compound. a. Mg3N2 b. KF c. Na2O d. Li2S f. KI e. CsF
Problema 40a
Name each ionic compound. a. SnCl4 b. PbI2 c. Fe2O3 d. CuI2 e. HgBr2 f. CrCl2
- What is the appropriate name for each ionic compound: a. SnO, b. Cr2S3, c. RbI, d. BaBr2?
Problema 41
Problema 43b
Name each ionic compound containing a polyatomic ion. a. CuNO2 b. Mg(C2H3O2)2 c. Ba(NO3)2 d. Pb(C2H3O2)2
Problema 44a
Name each ionic compound containing a polyatomic ion. a. Ba(OH)2 b. NH4I c. NaBrO4 d. Fe(OH)3
Problema 47c
Write the formula for each ionic compound. a. sodium hydrogen sulfite b. lithium permanganate c. silver nitrate d. potassium sulfate e. rubidium hydrogen sulfate
Problema 47f
Write the formula for each ionic compound. f. potassium hydrogen carbonate
Problema 48a
Write the formula for each ionic compound. a. copper(II) chloride
Problema 48b
Write the formula for each ionic compound. b. copper(I) iodate c. lead(II) chromate e. potassium hydroxide
Problema 48d
Write the formula for each ionic compound. d. calcium fluoride
Problema 48f
Write the formula for each ionic compound. f. iron(II) phosphate
Problema 51c
Write the name from the formula or the formula from the name for each hydrated ionic compound.
a. CoSO4•7 H2O
b. iridium(III) bromide tetrahydrate
c. Mg(BrO3)2•6 H2O
d. potassium carbonate dihydrate
Problema 52a
Write the name from the formula or the formula from the name for each hydrated ionic compound.
a. cobalt(II) phosphate octahydrate
b. BeCl2•2 H2O
c. chromium(III) phosphate trihydrate
d. LiNO2•H2O
Problema 53
Name each molecular compound. a. CO b. NI3 c. SiCl4 d. N4Se4
Ch.3 - Molecules and Compounds
