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Chemistry – Unit 9 Objectives Stoichiometry II By the time we finish this unit, you should be able to: 1. Review Concepts: Solutions: a homogeneous mixture of a solute dissolved in a solvent; dissolving process (U4 3) Gas Behavior (relationships between P, n, V, T); standard temperature and pressure (STP) for gases (U 2) Energy storage and transfer mechanisms in a molecular system; Energy constants (U 3, U 6) 2. Use the concept that P n to determine the partial pressure of a particular gas in a mixture. 3. Determine by experiment the volume of a mole of gas at STP. 4. Use the ideal gas law equation to determine the number of moles in a sample of gas not at standard conditions. 5. Beginning with a balanced equation and volume, temp, and pressure of a gaseous reactant or product predict the moles of another reactant or product Modeling Chemistry 1 U9 obj v2.0 6. Relate the molar concentration (molarity) of a solution to the number of moles and volume of the solution. 7. Beginning with a balanced equation and the volume and molarity of a reactant or product, predict the moles of another reactant or product in the reaction. 8. Describe endothermic and exothermic reaction in terms of energy bar graphs and system flow diagrams (LOLOL) Balanced equations with a quantitative energy term H notation 9. Extend the use of the BCA table to cases involving volume of a gas volume of a solution, or energy of reaction to determine stoichiometric relationships in a reaction. 10. Vocabulary Concentration Molarity Partial Pressure Molar Volume Ideal Gas Endo-, exothermic Enthalpy Modeling Chemistry 2 U9 obj v2.0