General Chemistry I Review Sheet for Exam II Review homework, in‐class worksheets, and the textbook to find examples of the following types of problems. Be able to execute any of these tasks for the exam. In some cases, more than one task will be combined into a given exam question. Students should be able to … 1. Convert between grams and moles for the amount of a chemical substance. 2. Compute the %mass for a compound given its chemical formula. 3. Determine the empirical formula of a compound given its %mass. 4. Determine the empirical formula of a compound from combustion analysis. 5. Balance a chemical equation. 6. Given an amount of one reactant, determine how much of another reactant is needed. 7. Given an amount of one reactant, determine how much product could form. 8. Given the amounts of two reactants, determine the limiting reactant. 9. Given the amounts of two reactants, compute the maximum amount of product that could form. 10. Given the amounts of two reactants and the experimental yield, compute the % yield. 11. Given the amounts of two reactants, determine how much of one reactant remains when the other completely reacts. 12. Given the amounts of two reactants and the amount of product that formed, determine the amounts of each reactant that remain. 13. Identify whether or not a given compound is soluble in water. 14. Given the amount of a solute and the total solution volume, compute the molarity. 15. Given the molarity of a solution and its volume, compute how many moles of the solute are present. 16. Explain how to prepare s solution from the solid solute. 17. Explain how to prepare a solution starting from a solution of greater concentration. 18. Given two aqueous reactants, predict the reaction product (if any) and balance the equation. You should be able to do this for these types of double‐displacement reactions: a. Precipitation b. Acid‐Base c. Gas‐Forming 19. Given the volume and molarity of an acid (base), compute what volume of a base (acid) is needed to neutralize it. 20. Given titration data, compute the original molarity of a solution being titrated. 21. Assign oxidation numbers to elements present in a chemical formula. 22. Identify the anatomy of an oxidation‐reduction reaction: a. which atoms are being oxidized? b. which atoms are being reduced? c. which reactant is the oxidizing agent? d. which reactant is the reducing agent? e. how many electrons are transferred in the balanced chemical equation?