1. Science Starter (Week 11, Day 1)
Homework on desk!
1. A student reacts 15 moles of silver nitrate according to the balanced equation below. How many moles of silver will be produced? 2 AgNO3 + 1 Cu  1 CuCl2 + 2 Ag 2. If 18 moles of O2 were consumed using this chemical reaction, how many moles of lead (II) oxide would be produced? 2PbS + 3 O22 PbO+ 2 SO2 3. If we need to convert between MOLES and MOLES, what do we use? 4. If we need to convert between MOLES and MASS, what do we use?

2. Objective
SWBAT convert between moles, grams, liters, particles of one substance to another substance using molar conversions and stoichiometric coefficients (mole bridge).
2/3 Step Stoichiometry!

3. Agenda Mole Box due Friday 4/15 Science Starter Flow Chart
Stoichiometry Continued
Mass
Volume
Particles
Practice Problems
Work Time
Mole Box due Friday
4/15

4. Unit 5: The Mole 2/3 Step Stoichiometry

5. Copy the following chart on back of sheet from yesterday
Divide by Molar Mass
Multiply by Molar Mass
Use Molar Ratio From Equation
Multiply
by 22.4
Divide
by 22.4
__ Mol G
b Mol W
__ Mol W
Divide by 6.02x1023
Multiply by 6.02x1023
a Mol G

6. What conversion do we need to use?
Mole to Mass
What conversion do we need to use?
1. How many grams of ethylene (C2H4) are required to produce 45 moles of carbon dioxide?
C2H4 + 3 O2 2 CO2 + 2 H2O
Given:
Find:

7. Mass to Mass
What conversion do we need to use?
2. Using an apparatus for electrolysis, a chemist decomposes 36g of water according to the balanced chemical equation below. How many grams of hydrogen gas should she get?
Equation: 2 H2O(l) 2 H2 (g) + 1 O2 (g)
Given:
Find:

8. What conversion do we need to use?
Mass to Volume
What conversion do we need to use?
3. In the equation 2KCl03 2KCl + 302, how many liters of oxygen are produced when 3.0 grams of KCl03 decompose completely?
Given:
Find:

9. What conversion do we need to use?
Particles to Volume
What conversion do we need to use?
4. Iron metal and oxygen combine to form the magnetic oxide of iron, Fe3O4. How many particles of iron can be converted to magnetite by 8.80 grams of pure oxygen?
Eq: 3 Fe O2 Fe3O4
Given:
Find:

10. What conversion do we need to use?
Volume to Moles
What conversion do we need to use?
5. For the reaction 2H2 + O2 2H20, approximately how many moles of water are produced from 6.00 liters of hydrogen?
Given:
Find:

11. Practice Problems & Gallery Walk
Work on the problem assigned to your group
If you are marked correct, then copy the conversion down on your sheet of paper and put it up somewhere in the room
You must copy down 2 more conversions on your own sheet for notes

12. Complete side B of your homework (5.4 Stoichiometry)
Work Time
Complete side B of your homework (5.4 Stoichiometry)