1. The Mole
Molar Conversions

2. A. What is the Mole? HOW LARGE IS IT???
1 mole of hockey pucks would equal the mass of the moon!
1 mole of basketballs would fill a bag the size of the earth!
1 mole of pennies would cover the Earth 1/4 mile deep!

3. Molar Conversions
Converting from moles to grams to representative particles and vice versa. Use the following conversion factor:
1 mole = 6.02 x 1023 representative units = molar mass (g)
or formula weight
Representative units -
a. ionic compounds are called formula units
b. molecular compounds are called molecules
c. atoms are called atoms.
Example of representative units -
6.02 x atoms Cu
6.02 x molecules O2
6.02 x units NaCl

4. Molar Conversion Examples
How many moles of carbon are in 26.0 g of carbon?
26.0 g C
1 mol C
12.0 g C
= 2.17 mol C

5. Molar Conversion Examples
How many molecules are in 2.50 moles of C12H22O11?
2.50 mol
C12H22O11
6.02  1023
molecules
1 mol C12H22O11
= 1.51  1024
molecules
C12H22O11

6. Molar Conversion Examples
Find the mass of 2.1  1024 formula units of NaHCO3.
2.1  1024
units NaHCO3
84.0 g NaHCO3
6.02  1023
units NaHCO3
= 290 g NaHCO3

7. Molar Conversion Examples
Find the number of units of Iron (III) Chlorate in of 98.6 g of Iron (III) Chlorate.
98.6 g
Fe(ClO3)3
6.02 x 1023
units Fe(ClO3)3
306.3 g
Fe(ClO3)3
= 1.94 x 1023 units Fe(ClO3)3