1. Bell Work 1 / Mole Map
1. Draw the Mole Map and include the relationships that exist between each section.

2. Bell Work 2 / Atom - Mole - Mass
If you have a sample of copper that contains
7.83X 1024 atoms. How many moles of copper
do you have?

3. Bell Work 3 / Mole Conversion Review
1. Determine the number of atoms in 2.59 Moles of hydrogen gas?
2. How many grams are in 6.89 moles of glucose (C6H12O6) ?
3. You have a sample that contains 42.6 grams of sodium carbonate. How many molecules would be in the sample?

4. Bell Work 4 / Mole Conversion
How many molecules are in moles of N2O5 ?
2. Find the number of moles of argon in 452 g of argon.
3. What is the volume of 1.2 moles of water vapor at STP?
4. Determine the volume in liters occupied by 14 g of nitrogen gas (diatomic) at STP.

5. Bell Work 5 / % Composition
1. Determine the percent composition of a sample of CaCl2.
2. If you have a gram sample of CaCl2 what is the mass of Calcium in the sample?

6. Bell Work 6 / % Comp 2
1. Determine the percent composition of Calcium in the following:
a. CaO b. Ca(NO3)2 c. Ca3(PO4)2
2. In a chemical reaction we have grams of calcium and 4.28 grams of oxygen. What is the percent composition of the compound formed?

7. Bell Work 7 / Empirical Formula
1. Determine the empirical formula for the following:
The compound adrenaline contains 56.79% C, 6.56% H, 28.37% O, and 8.28% N by mass.
2. If the molecular mass is found to be grams / mole. What is the molecular formula?

8. Bell work 8 / Empirical Formulas
1. Determine the empirical formula for an unknown compound composed of 38.4 % potassium, 36.3 % oxygen, 23.7 % carbon, and 1.66 % hydrogen.

9. Bell work 8 / Empirical Formulas
Determine the empirical formula for an unknown compound composed of 38.4 % potassium, 36.3 % oxygen, 23.7 % carbon, and 1.66 % hydrogen.
38.4 g K mole
39.1 g  / = 1.00
36.3 g O mole = 2.27 / = 2.31
16.0 g
23.7 g C mole = 1.98 / = 2.01
12.0 g
1.66 g H mole = / 1.67
1.01 g
We will continue with the rest of this problem in tomorrows class

10. Bell Work 9 / % Water in a Hydrate
1. Determine the % Water in each of the following:
Sodium nitrate penthydrate Lead (II) sulfate trihydrate

11. Bell Work 9 / % Water in a Hydrate
1. Determine the % Water in each of the following:
Sodium nitrate penthydrate Lead (II) sulfate trihydrate

12. Bell Work 10 / Hydrate Determine the % Water in each of the following:
Copper (II) Sulfate pentahydrate
A 34.1 g sample of a cooper (II) chloride hydrate was heated to drive off the water. The remaining anhydrous sample was 26.9 g. Find the number of waters of hydration in the hydrate.

13. Bell Work 7 / Empirical Formula
1. Determine the empirical formula for the following:
The compound adrenaline contains 56.79% C, 6.56% H, 28.37% O, and 8.28% N by mass.
2. If the molecular mass is found to be grams / mole. What is the molecular formula?

14. Bell Work 4 / Nomenclature Review
1. Write the Chemical Formula or name for the Following:
a. Lithium fluoride b. Manganese (II) Phosphide
c. NiS d. ZnCl2
2. Write the following chemical Formulas:
a. Silver Chloride b. Ammonium Phosphate
c. Iron (II) Sulfate d. Tin (IV) oxide