1. WARM-UP 12/6/13
**Homework (Pg. 361 #13&14) out on your table please!**
1. How many moles are in 5.00 g of CaC2?
2. Based on the balanced equation below, how many moles of C2H2 can be made from the answer to #1?
CaC2 + 2H2O  C2H2 + Ca(OH)2
3. How many grams are in the answer to #2?

2. 12/5/13 Objective 12/5/13 Agenda Solve stoichiometry problems
Review Warm-Up
Review Homework
Stoichiometry Practice
Finals Review

3. Rest of the Semester Monday Tuesday Wednesday Thursday Friday 2
Balancing Equations 3
Review Conversions 4
Mole Ratio 5
Complete Stoichiometry 6
Get Final Review 9
Extra Credit Project due
Review Test 1 Material 10
Review Test 2 Material 11
Review Stoichiometry
Intro to Cookie Lab 12
Cookie Lab
Final Review 13
Debrief Lab
Holiday Party? 16
Final Final Review 17
Finals (1 & 4) 18
Finals (2 & 5) 19
Finals (3 & 7) 20
Finals (6 & 8)

4. WARM-UP 12/6/13 1. How many moles are in 5.00 g of CaC2? = x= x
0.078 mol CaC2

5. WARM-UP 12/5/13
2. Based on the balanced equation below, how many moles of C2H2 can be made from the answer to #1?
CaC2 + 2H2O  C2H2 + Ca(OH)2 x =
0.078 mol C2H2

6. WARM-UP 12/5/13 3. How many grams are in the answer to #2? x =x =
2.03 g C2H2

7. Putting it all together: Stoichiometry
Calculating the mass of one substance from the mass of another substance.
mass A  moles A  moles B  mass B
molar mass
moles A
 moles B
mole ratio
moles B
 mass B
molar mass

8. Let’s do a problem together
Calculate the number of grams of NH3 that can be produced by 5.40g of hydrogen.
N2 + 3H2  2NH3
mass A  moles A  moles B  mass B
molar mass
mole ratio
molar mass x x x =

9. Do problem #1 on the Stoichiometry worksheet.
Your turn!
Do problem #1 on the Stoichiometry worksheet.
Explain to a neighbor how you did it.
We’ll share as a class.

10. Announcement about Finals
By the end of Monday (12/9/13), those with A’s in chemistry can choose not to take the final exam.
If you’re close to an A,
you might still get there by doing the extra credit mole project.
Must still come during finals for an alternative assessment.

11. Section 1 of Final Review
Tutoring Today!
5th – Ms. Au-Yeung – Rm. 402
12/6/13 Homework
Section 1 of Final Review