1. DO NOW!!! Top of Worksheet!
Root canal: Calcium hydroxide is sometimes used in dentistry to temporarily fill the space left by a root canal. The equation for the formation of calcium hydroxide is below:
111 g/mol
40 g/mol
74 g/mol
58.5 g/mol

2. After today you will be able to…
Convert between grams of a substance using the mole tunnel
Safely navigate the mole tunnel

3. 6
X Molar Mass!
0.50 mol
1.0 mol
1.0 mol
40 g
0.1 mol
.2 mol
11.1 g
8.0 g
7.4 g
11.7 g

4. ONE HALF MOLE OF CALCIUM HYDROXIDE FOR EVERY MOLE OF NaOH
How many moles of calcium hydroxide are formed for every mole of NaOH used?
ONE HALF MOLE OF CALCIUM HYDROXIDE FOR EVERY MOLE OF NaOH

5. ONE MOLE OF NaCl FORMS FOR EVERY 0.50 MOLES OF NaCl FORMED
For every 0.50 moles of Ca(OH)2 formed, how many moles of NaCl are formed?
ONE MOLE OF NaCl FORMS FOR EVERY 0.50 MOLES OF NaCl FORMED

6. Why isn’t the number of grams of CaCl2 and Ca(OH)2 identical?
The atoms in calcium chloride and calcium hydroxide have different masses!
Therefore, their molar masses are different. A mole of one substance doesn’t weigh the same as a mole of the other substance; however, a mole of the first substance makes one mole of the second substance.

7. WELCOME TO THE MOLE TUNNEL…
DOWN= DIVIDE
UP= MULTIPLY

8. THE LAWS OF THE MOLE TUNNEL
Only moles can talk to moles
You must be BALANCED
To enter tunnel you must go down, therefore you DIVIDE
To exit tunnel you must go up, you MULTIPLY
Grams, liters, and atoms CANNOT talk to each other

9. = 6 3 2 1 120 grams CaCl2 126.48 grams NaCl ÷ 111.0 g/mol X 58.5 g/mol
1.08 mol CaCl2
6 mol NaCl =
2.16 mol NaCl
3 mol CaCl2

10.  #1 How many grams of sodium sulfate will be formed if you start with 200 grams of sodium hydroxide and you have an excess of sulfuric acid?   ___NaOH + ____H2SO4  ____H2O + ____Na2SO4

11. Questions?
Complete Worksheet!
Reaction on

12. Reaction on