1. Happy Birthday Christy (1979)
Read Chapter 6 section 1-5 (again)
Mastering Chemistry
New assignment will be posted later today
Due Thursday by 11:59PM

2. Using Avogadro’s number
How many molecules are there in mol of carbon tetrachloride?
1 mol CCl4 = 6.022x1023 molecules CCl4

3. The mole Only 2 options of what to do with the mole: mole particles
Avogadro’s #
mole
particles
molar mass
mole
mass

4. The mole Only 2 options of what to do with the mole: mole particles
Avogadro’s #
mole
particles

5. The mole Only 2 options of what to do with the mole: mole mass
molar mass
mass

6. 81.534 grams of water is equivalent to how many moles of water?
The mole
grams of water is equivalent to how many moles of water?
game plan: g  mol
game plan: g
game plan:

7. The mole
How many grams of carbon dioxide are contained in a chunk of dry ice with x1023 molecules of carbon dioxide?
game plan: molecules  mol
game plan:
game plan: molecules
game plan: molecules  mol  grams

8. The mole
A helium balloon contains x1021 atoms, how many grams of helium are in the balloon?
game plan: atoms  mol
game plan: atoms
game plan:
game plan: atoms  mol  g

9. How many molecules are in of 25.00 kg of gaseous UF6 at STP?
The mole
How many molecules are in of kg of gaseous UF6 at STP?
game plan: kg
game plan:
game plan: kg  g  mol
game plan: kg  g  mol  molecules
game plan: kg  g

10. The mole Only 2 options of what to do with the mole: mole “X” mole “Y”
mole-to-mole ratio
mole “X”
mole “Y”

11. The mole Only 2 options of what to do with the mole:
2 places to find a mole-to-mole ratio:
a chemical formula
H2O
mole-to-mole ratio comes from the subscripts of the formula

12. The mole
Al2S3

13. The mole Only 3 options of what to do with the mole: mole particles
Avogadro’s #
mole
particles
molar mass
mole
mass
mole-to-mole ratio
mole “X”
mole “Y”

14. The mole
How many ATOMS of nitrogen are in moles of ammonium sulfide?
(NH4)2S
We know a conversion from moles of (NH4)2S to moles of N
We know how to get between moles and atoms: