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Quick Review

Quick Review. List the different types of atoms and the number of each in the following substances. Quick Review. Determine the number of hydrogen molecules (H 2 ) that would balance the following chemical equation. 4SnHO 2 + ?H 2 → 4SnH + 8H 2 O 8. Chemistry.

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Quick Review

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  1. Quick Review List the different types of atoms and the number of each in the following substances.

  2. Quick Review Determine the number of hydrogen molecules (H2) that would balance the following chemical equation. 4SnHO2 + ?H2 → 4SnH + 8H2O 8

  3. Chemistry Lesson 1.10 – Amount of Reactants and Products

  4. Daily Question Why can I determine the amount of a reactants used only by knowing the amount of the product produced?

  5. I can determine the amount of reactants used or products produced from a balanced chemical equation. (2a) • A factory produces a substance using the balanced chemical reaction below. If the factory wants to produce 100 atoms of SO2how many molecules of oxygen must the factory add? 1. What: If we know the numberof moleculesof a productthen we can determinehow many moleculesof a reactantmust have been used. 4FeS + 7O2→ 2Fe2O3+ 4SO2

  6. I can determine the amount of reactants used or products produced from a balanced chemical equation. (2a) • A factory produces a substance using the balanced chemical reaction below. If the factory wants to produce 100 atoms of SO2how many molecules of oxygen must the factory add? 2. Why: A chemicalengineerfinds ways to produce new chemicals. He or she wants the reactions to produce the most number of products possible. They must also know how much of each reactant they need. 4FeS + 7O2→ 2Fe2O3+ 4SO2

  7. I can determine the amount of reactants used or products produced from a balanced chemical equation. (2a) • A factory produces a substance using the balanced chemical reaction below. If the factory wants to produce 100 atoms of SO2how many molecules of oxygen must the factory add? 3. How – The Right Answer RailRoad! a. List the knowninformationunder the chemical equation. b. Place a questionmarkunder the substance in question. 4FeS + 7O2→ 2Fe2O3+ 4SO2

  8. I can determine the amount of reactants used or products produced from a balanced chemical equation. (2a) ?Al + 6FeO → 2Al2O3 + 6Fe • A factory produces a substance using the balanced chemical reaction below. If the factory wants to produce 100 atoms of SO2how many molecules of oxygen must the factory add? c. Setup the RailRoad i. Write the givenamount and include the formulaof the moleculeafter. ii. Draw a verticalline. 4FeS + 7O2→ 2Fe2O3+ 4SO2

  9. I can determine the amount of reactants used or products produced from a balanced chemical equation. (2a) • A factory produces a substance using the balanced chemical reaction below. If the factory wants to produce 100 atoms of SO2how many molecules of oxygen must the factory add? iii. Write in ratio. 1. Write coefficient of knownmolecule on bottom. 2. Write coefficient of unknownmolecule on top. iv. Solve by multiplyingacrossboth tracks and dividingthe toptrack by the bottom. 4FeS + 7O2→ 2Fe2O3+ 4SO2

  10. Guided Practice You should be working with us, not ahead!

  11. Guided Practice I can determine the amount of reactants used or products produced from a balanced chemical equation. (2a) 1. A chemist is performing the balanced chemical reaction below. If she wants to obtain 120 molecules of HCl, how many molecules of AsCl3 must she use? 2AsCl3 + 3H2S →As2S3 + 6HCl

  12. Guided Practice I can determine the amount of reactants used or products produced from a balanced chemical equation. (2a) 2. Aluminum chloride is a substance used in deodorant. A deodorant manufacturer wants to produce 400 molecules of AlCl3. How many molecules of Cl2 will be used up by the reaction? 2Al + 3Cl2 → 2AlCl3

  13. Quiz 2 Label a sheet of paper: Your Name Science November 15, 2012 Quiz 2

  14. I-N-D-E-P-E-N-D-E-N-T Do you know what that means?

  15. Exit Ticket Show what you know!!!

  16. 1. How many oxygen atoms are in 3NaOCO3H ?

  17. 2. How many zinc (Zn) atoms are in the products? 4Zn + 8HCl → 4ZnCl2 + 4H2

  18. 3. How many oxygen atoms are in the products? C2H6 + O2→ 2CO2 + H2O

  19. 4. If a chemist wants to produce 120 molecules of (NH3), how many molecules of hydrogen are needed? N2 + 3H2 → 2NH3

  20. 5. A factory has 100 molecules of NaClO3, how many molecules of oxygen could be produced using the following equation? 2NaClO3 → 2NaCl + 3O2

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