1. QOTD What is atomic mass? How is atomic mass determined?
Convert 15 kg to mg
What is dimensional analysis? How is it used?

2. The Mole
Objective 3.02

3. What is a MOLE???? An amount of a substance n
A unit of measurement specific to chemistry
mole
mol n

4. The Mole “like a dozen” Specific quantity Does not change
The # of “things” in 1 mole
6.022 x 1023
Avogadro’s Number:

5. The Mole How its used in Chemistry:
Elements are made up of _______________.
1 mole Cu =
1 mole Na =
1 mole O =

6. The Mole How its used in Chemistry:
Compounds are made up of _____________.
1 mole NaCl =
1 mole LiOH =
1 mole CaF2 =

7. How its used in Chemistry:
The Mole
How its used in Chemistry:
1 mole Ca3(PO4)2
* Subscripts = # of moles of the element in the compound

8. How its used in Chemistry:
The Mole
How its used in Chemistry:
2 H2 + O2  2 H2O
* Coefficients = # of moles of a substance in a reaction

9. QOTD What is a mole? How is a mole used?
Which are coefficients and which are subscripts in the chemical formula 2 H2 + O2  2 H2O ?
What is stoichiometry?

10. Molar Mass (Molecular Weight)
1 mole of each substance has a “molar mass” – a specific weight
It is the same as atomic mass only in g
Ex:
1 mole Na =
1 mole C =
1 mole Li =
The units for molar mass are g/mol

11. Molar Mass (Molecular Weight)
1 mole H2O =
1 mole NaCl =
1 mole Pb(NO3)2 =

14. Mole Conversion Review Problems
Convert the following:
1. 4.3g of calcium hydroxide into moles
moles of aluminum oxide into grams
x 1024 molecules of water into moles
moles of sodium carbonate into molecules
grams of beryllium bromide into molecules
x 1023 atoms of copper into grams of copper.
7. How many atoms of iron are there in 5.6 moles of iron (III) phosphate?
8. What is the mass of cobalt in 0.31 moles of cobalt (II) nitride?

15. QOTD
g of NaCl into moles moles of LiOH into grams x 1024 molecules of H2O2 into moles moles of CO2 into molecules

16. Mole Conversion Review Problems
Convert the following:
grams of beryllium bromide into molecules
x 1023 atoms of copper into grams of copper.
7. How many atoms of iron are there in 5.6 moles of iron (III) phosphate?
8. What is the mass of cobalt in 0.31 moles of cobalt (II) nitride?