1. The Mole
Avogadro’s number

2. How much is:
A dozen?
A century?
A mole?

3. How much is: A dozen? 12 A century? 100 A mole? 6.02 x 1023
(602,000,000,000,000,000,000,000)

4. The Mole
The mole, the mole, the pivot point of chemistry. The mole, the mole, a concept you just have to see. A mole is the name for a number... That’s very, very large,... very, very large,... very, very large, ... very LARGE!
Six point oh-two-two times ten to the twenty-third. Ohhh, six point oh-two-two times ten to the twenty-third. We go from grams to moles to molecules, From grams to moles to liters. No matter where you go in chemistry, use moles!

5. Can you count a mole of pennies?
If you could count 5 per second, it would take you

6. Can you count a mole of pennies?
If you could count 5 per second, it would take you
6.02 x ÷ 5 pennies/second ÷ 60 sec/min ÷ 60 min/hr ÷ 24hrs/day ÷ 365 days/yr =
3,800,000,000,000,000 years!

7. Can you spend a mole of dollars?
If you could spend $1,000,000 every second it would take you

8. Can you spend a mole of dollars?
If you could spend $1,000,000 every second it would take you
6.02 x ÷ $1,000,000/sec ÷ 60 sec/min ÷ 60 min/hr ÷ 24hrs/day ÷ 365 days/yr =
19,000,000,000 years!

9. When measuring amounts, you can count or you can mass them.
If I want 2 dozen baseballs, I can count 24 baseballs
Or I can mass 16 kg of baseballs.

10. How many tennis balls are in 6 kg?24
( 2 dozen)

11. How many tennis balls are in a mole?
6.02 x 10^23
in a mole
12 in a dozen

12. Since we can’t count a mole of atoms, we MUST mass chemicals to measure moles
6.02 x atoms of sulfur
32.07 grams of sulfur
6.02 x atoms of carbon
12.01 grams of carbon

13. How do we measure moles?
The atomic mass on your periodic table is the mass of a mole of atoms of that element.
What is the mass of a mole of copper atoms?
So, to count 6.02 x 1023 copper atoms, we mass out g on the scale.

14. Find the mass of: A mole of silicon atoms
6.02 x 1023 atoms of nitrogen
6.02 x 1023 atoms of sodium
moles of sodium atoms

15. Find the mass of: A mole of silicon atoms 28.09 g
6.02 x 1023 atoms of nitrogen
14.01 g
6.02 x 1023 atoms of sodium
22.99g
2 moles of sodium atoms
45.98 g

16. How many atoms are in: A mole of silicon 14.01 g of nitrogen
2 moles of sodium
45.98 g of sodium

17. How many things are in: A mole of footballs A mole of water
2 moles of pencils
½ mole of lead

18. Molar mass is the mass of one mole of a substance
To find the molar mass of an element, look on the periodic table.
To find the molar mass of a compound, add all the masses of its elements

19. Find the molar mass of: Ammonium phosphate NH4+ PO43- (NH4)3PO4
Carbon dioxide
CO2

20. Find the molar mass of: Ammonium phosphate NH4+ PO43- (NH4)3PO4=
=149g
Carbon dioxide
CO2 =
= 44 g

21. Find the molar mass of:
Water
H2O
Germanium Ge

22. Find the molar mass of: Water H2O = 2 + 16 = 18 g Germanium Ge

23. Find the molar mass of: Hydrogen gas H2 = 2 g Elemental hydrogen H

24. Find the molar mass of:
Iron Fe
Iron (III) hydroxide
Fe3+ OH-
Fe(OH)3

25. Find the molar mass of: Iron Fe = 55.85 g (or 56 g)
Iron (III) hydroxide
Fe3+ OH-
Fe(OH)3 =
=107 g

27. Remember unit factors?
1 dozen atoms silver
12 silver atoms

28. Mole Day is October 23!