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Chemistry 103

Chemistry 103. Lecture 17. Bonds. Ionic Bonds - electron transfer process. Typically between a metal and a nonmetals Covalent Bonds - electrons shared. Typically involving nonmetals. Ionic Radii Ionic Bonds defined Lewis Symbols Lewis Diagrams Nomenclature Polyatomic Ions. NaCl.

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Chemistry 103

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  1. Chemistry 103 Lecture 17

  2. Bonds • Ionic Bonds - electron transfer process. Typically between a metal and a nonmetals • Covalent Bonds - electrons shared. Typically involving nonmetals.

  3. Ionic Radii Ionic Bonds defined Lewis Symbols Lewis Diagrams Nomenclature Polyatomic Ions NaCl Chapter 5 & 6 - Ionic Compounds (Sodium Chloride)

  4. Molecules - Molecular Compounds & Elements Covalent bonding Lewis Structures Properties of Bonds Valence count Nomenclature Bond Polarity/Electronegativity CH4 (methane) Chapter 6 & 7 - Covalent Systems

  5. NH4Cl Lewis Structures/Nomenclature

  6. Which pair of atoms will form the most polar bonds? a. C,N b. C,O c. C,F d. C,C e. all are equal Bond Polarity

  7. Molecular and Formula Masses The Mole (Molar Mass & Avogadro’s number) Percent Composition Dalton’s law of Definite Proportions Empirical/Molecular Formulas Chapter 8 - Chemical Quantities

  8. Which contains more oxygen atoms: 0.50 moles of H2O, 15 g of NO2, or 3.0 x 1023 molecules of SO3? Mathematics of Chemistry H2O B. NO2 C. SO3

  9. A sulfur oxide (contains only S and O) having 50.0% by mass sulfur might have which molecular formula(s)? a. SO b. SO2 c. S2O d. S2O4 e. both SO2 or S2O4 Mole Problems

  10. Chemical Equations Balancing Reactions Types of Chemical Reactions Chapter 9 - Chemical Reactions

  11. When the equation: K(s) + H2O(l) --- KOH(aq) + H2(g) is balanced, the sum of the coefficients is ___? a. 4 b. 5 c. 6 d. 7 e. 8 Balancing Chemical Equations

  12. Predict the products of the following (unbalanced) reaction: Mg(NO3)2 + Al(OH)3 -----> a. MgH2 and Al(ONO3)3 b. Mg(OH)2 , Al(NO2)3 and O2 c. Mg(OH)2 and Al(NO3)3 d. Mg(OH)2 , Al2O3 and NO2 Chemical Reactions

  13. Basic Stoichiometry Moles Grams Limiting Reactant BEFORE vs AFTER Left over Reactant Percent Yield Chapter 10 - Stoichiometry

  14. Stoichiometry • The overall chemical equation for the photosynthesis reaction in plants is 6CO2 + 6H2O -----> C6H12O6 + 6O2 a. How many grams of sugar can be produced from 25.0g of CO2 and 25.0g of H2O? b. After the reaction has run to completion, how many grams of the remaining reactant are left over?

  15. Consider the reaction: 3K2MnO4 + 4CO2 + 2H2O --------> 2KMnO4 + 4KHCO3 + MnO2 When 9.50 moles of K2MnO4, 7.20 x 1024 molecules of CO2 and 90.0g of H2O are mixed, a 173g quantity of MnO2 is actually produced in the lab. What is the percent yield of MnO2 based on the limiting reactant concept? Stoichiometry

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