Tro - Chemistry: A Molecular Approach 4th Edition - Chapter 3

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Ch.3 - Molecules, Compounds & Chemical Equations

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Tro 4th Edition

Ch.3 - Molecules, Compounds & Chemical Equations

Problem 51a,b,c
Name each acid. a. HI(aq) b. HNO₃(aq) c. H₂CO₃(aq)
Problem 52a
Name each acid. a. HCl(aq)
Problem 52b,c
Name each acid. b. HClO₂(aq) c. H₂SO₄(aq)
Problem 53a,b,c
Write the formula for each acid. a. hydrofluoric acid b. hydrobromic acid c. sulfurous acid
Problem 54
Write the formula for each acid. a. phosphoric acid b. hydrocyanic acid c. chlorous acid
Problem 55a,b
Refer to the nomenclature flowchart (Figure 3.11) to name each compound. a. SrCl₂ b. SnO₂
Problem 55c
Refer to the nomenclature flowchart (Figure 3.11) to name each compound. c. P2S5
Problem 55d
Refer to the nomenclature flowchart (Figure 3.11) to name each compound. d. HC2H3O2(aq)
Problem 56a
Refer to the nomenclature flowchart (Figure 3.11) to name each compound. a. HNO₂(aq)
Problem 57a,b,c
Refer to the nomenclature flowchart (Figure 3.11) to name each compound. a. KClO₃ b. I₂O₅ c. PbSO₄
Problem 58a,b
Refer to the nomenclature flowchart (Figure 3.11) to name each compound. a. XeO₃ b. KClO
Problem 58c
Refer to the nomenclature flowchart (Figure 3.11) to name each compound. c. CoSO4
Problem 59a,b,c,d
Calculate the formula mass for each compound. a. NO₂ c. C₆H₁₂O₆ b. C₄H₁₀ d. Cr(NO₃)₃
Problem 60a,b,c,d
Calculate the formula mass for each compound. a. MgBr₂ b. HNO₂ c. CBr₄ d. Ca(NO₃)₂
Problem 61
Calculate the number of moles in each sample: a. 72.5 g CCl4 b. 12.4 g C12H22O11 c. 25.2 kg C2H2 d. 12.3 g dinitrogen monoxide
Problem 62
What is the mass of each sample? a. 15.7 mol HNO3 b. 1.04 × 10^-3 mol H2O2 c. 72.1 mmol SO2 d. 1.23 mol xenon difluoride
Problem 63
Determine the number of moles (of molecules or formula units) in each sample. a. 25.5 g NO₂ b. 1.25 kg CO₂ c. 38.2 g KNO₃ d. 155.2 kg Na₂SO₄
Problem 64a
Determine the number of moles (of molecules or formula units) in each sample. a. 55.98 g CF₂Cl₂
Problem 64b
Determine the number of moles (of molecules or formula units) in each sample. b. 23.6 kg Fe(NO₃)₂
Problem 64c
Determine the number of moles (of molecules or formula units) in each sample. c. 0.1187 g C₈H₁₈
Problem 64d
Determine the number of moles (of molecules or formula units) in each sample. d. 195 kg CaO
Problem 65a,c,d
How many molecules are in each sample? a. 6.5 g H₂O c. 22.1 g O₂ d. 19.3 g C₈H₁₀
Problem 66
How many molecules (or formula units) are in each sample? a. 85.26 g CCl₄ b. 55.93 kg NaHCO₃ c. 119.78 g C₄H₁₀ d. 4.59×10⁵ g Na₃PO₄
Problem 67a,b,c
Calculate the mass (in g) of each sample. a. 5.94×10²⁰ SO₃ molecules b. 2.8×10²² H₂O molecules c. 1 glucose molecule (C₆H₁₂O₆)
Problem 68a
Calculate the mass (in g) of each sample. a. 4.5×10²⁵ O₃ molecules
Problem 68b,c
Calculate the mass (in g) of each sample. b. 9.85×10¹⁹ CCl₂F₂ molecules c. 1 water molecule
Problem 69
A sugar crystal contains approximately 1.8×10¹⁷ sucrose (C₁₂H₂₂O₁₁) molecules. What is its mass in mg?
Problem 70
A salt crystal has a mass of 0.12 mg. How many NaCl formula units does it contain?
Problem 71a,b
Calculate the mass percent composition of carbon in each carbon-containing compound. a. CH₄ b. C₂H₆
Problem 71c
Calculate the mass percent composition of carbon in each carbon-containing compound. c. C₂H₂