Chapter 3 Learning Objectives: Molar Mass, Empirical Formulas, and Balancing Equations, Study notes of Chemistry

Download Chapter 3 Learning Objectives: Molar Mass, Empirical Formulas, and Balancing Equations and more Study notes Chemistry in PDF only on Docsity! Learning Objectives for Chapter 3 To help you review these learning objectives, the numbers of related sections (§), sample problems (SP), and upcoming end-of chapter problems (EP) are listed in parentheses. 1. Realize the usefulness of the mole concept, and use the relation between molecular (or formula) mass and molar mass to calculate the molar mass of any substance (§ 3.1) (EPs 3.1-3.5, 3.7-3.10) 2. Understand the relationships among amount of substance (in moles), mass (in grams), and number of chemical entities and convert from one to any other (§ 3.1) (SPs 3.1, 3.2) (EPs 3.6, 3.11-3.16,3.19) 3. Use mass percent to find the mass of element in a given mass of compound (§ 3.1) (SP 3.3) (EPs 3.17, 3.18, 3.20-3.23) 4. Determine the empirical and molecular formulas of a compound from mass analysis of its elements (§ 3.2) (SPs 3.4-3.6) (EPs 3.24-3.34) 5. Balance an equation given formulas or names, and use molar ratios to calculate amounts of reactants and products for reactions of pure or dissolved substances (§ 3.3 and 3.5) (SPs 3.7, 3.8, 3.15) (EPs 3.35-3.46, 3.62, 3.71, 3.72) 6. Understand why one reactant limits the yield of product, and solve limiting-reactant problems for reactions of pure or dissolved substances (§ 3.4, 3.5) (SPs 3.9, 3.10, 3.16) (EPs 3.47-3.54,3.61, 3.73,3.74) 7. Explain the reasons for lower-than-expected yields and the distinction between theoretical and actual yields, and calculate percent yield (§ 3.4) (SP 3.11) (EPs 3.55-3.60, 3.63) 8. Understand the meaning of concentration and the effect of dilution, and calculate molarity or mass of dissolved solute (§ 3.5) (SPs 3.12-3.14) (EPs 3.64-3.70, 3.75)