1. Mixed Stoichiometry Calculations

2. Objectives Today I will be able to:
Apply the conversion factors of molar mass, Avogadro’s number and mol ratios to calculating the volume, mass and quantity of particles in a sample.
Informal assessment – monitor student interactions and questions as they complete the mixed practice problems
Formal assessment – analyzing student responses to the practice worksheets and exit ticket
Common Core Connection
Demonstrate Independence
Build Strong Content Knowledge
Make sense of problem and persevere in solving them
Reason abstractly and quantitatively

3. Lesson Sequence Evaluate: Warm-Up Evaluate: Review Homework
Explain: Mixed Stoichiometry Calculations
Elaborate: Mixed Stoichiometry Calculation Practice
Evaluate: Exit Ticket

4. Warm-Up Take one of each paper on your way in!
Why did scientists create the mole?
What is the purpose of completing mass to mass conversions?

5. Objectives Today I will be able to:
Apply the conversion factors of molar mass, Avogadro’s number and mol ratios to calculating the volume, mass and quantity of particles in a sample.

6. Homework
Finish Mixed Stoichiometry Worksheet
Mole Project Due

7. Agenda Warm-Up Review HW Mixed Stoichiometry Calculations Examples
Mixed Stoichiometry Calculation Practice
Exit Ticket

8. Mixed Stoichiometry Calculations Examples

9. Example 1
4Fe + 3O2  2Fe2O3
A sample of iron contains 4.26 x 1024 atoms. When the sample is reacted with oxygen, what mass of iron (III) oxide is produced?

10. Example 2 -
H2 + Cl2 2 HCl
How many Liters of H2 gas are needed to produce 5.00 g of HCl?

11. Mixed Calculation Practice
Complete the practice at your desk. The problems not completed in class will become your homework.
Mixed Calculation Practice

12. Exit Ticket
Given the following equation. What is wrong with the following problem set up?
2 Na + 2 H2O  2 NaOH + H2
.25 g Na 1
2 mol Na
23 g Na
2 mol NaOH
2 mol Na
2 mol NaOH
40grams NaOH x x x