Summary for Week 4

MW & F, September 23, 25 and 27, 2002

Reading:

For this week: Finish Chapter 3 in BLB

Prelim over Chapters 1, 2, 3.1-3.5 on Monday, October 23 during your recitation time

A look ahead: BLB Chapter 4;

Homework problems:

Beginning of Chapter 3: 3, 5, 9, 12, 17, 20, 23, 27, 30, 37

End of Chapter 3: 41, 44, 47, 51, 53, 55, 57, 59, 61, 66, 67, 69, 86

Key concepts:

Beginning of Chapter 3

chemical reaction equations and balancing

stoichiometry

atomic and molecular weights

percentage composition by mass

amount of stuff: weighing and counting

the mole concept

End of Chapter 3

empirical formula and elemental analysis

empirical formula & molecular formula

combustion reactions

combustion analysis

quantitative use of balanced equations

limiting reactant

theoretical yield & percent yield

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