Lecture13_chem110_sa - Chapter 3 Chemical Formulas and Composition of Compounds CH110 FA11 SAS 1 Prepare for Recitation September 29 th ALEKS

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Unformatted text preview: Chapter 3: Chemical Formulas and Composition of Compounds CH110 FA11 SAS 1 Prepare for Recitation September 29 th ALEKS Objective 5 due September 27 th ANGEL Quiz 5, September 29 th Lecture 13: September 21 st Lecture 14: September 23 rd Lecture 15: September 26 th Read: Ch. 2.6, 3.3-3.5, 9.1-9.3 Additional Preparation: BLB 3 : 25,29,35,37,51,53; Packet 3 : 1-9 BLB 9 : 23,25,27,38; Packet 9 : 1-7 CH110 FA11 SAS 2 By the end of Today’s Lecture you should know: Relationship between molecular and empirical formula Combustion Analysis Formula and molecular weights Stoichiometry problems What does a structural formula tell us about the composition of a compound? What does the empirical formula tell us about the composition of compounds? Remember: structure affects function! How do chemists determine the composition of unknown compounds? KEY QUESTIONS: THE BIG PICTURE Chapter 3: Chemical Formulas and Composition of Compounds Exam 2 Concepts You Should Know: CH110 FA11 SAS 3 • How do we determine the composition of a compound from the various chemical formulas? • What is combustion analysis? Chapter 3: Chemical Formulas Again Chapter 25: Organic Molecules Chapter 9: Bonding and Geometry • What are the properties of hydrocarbons? • What do the functional groups we learned about look like and how do they affect properties? • What are the shapes of the electron domain and molecular geometries we have studied? • What is molecular polarity and how is it determined by shape? • What are sigma and pi bonds? • How do hybrid orbitals relate to molecular shape and bond angles? • What are the IMFs we have learned about? • How do IMFs impact boiling and melting points? Chapter 11: Intermolecular Forces Chemical Formula CH110 FA11 SAS 4 Chemical Formula: Subscripts denote the number of atoms per molecule O 2 : O 3 : Use of Chemical Formulas CH110 FA11 SAS 5 Nomenclature Subscripts Coefficients (the numbers that come before the formula) Conservation of Mass 2H 2 + O 2 2H 2 O Balance your equations by changing the...
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This note was uploaded on 01/18/2012 for the course CHEM 110 taught by Professor Hofmann,brucerob during the Fall '08 term at Pennsylvania State University, University Park.

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Lecture13_chem110_sa - Chapter 3 Chemical Formulas and Composition of Compounds CH110 FA11 SAS 1 Prepare for Recitation September 29 th ALEKS

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