The Mole
Name _________________
A Mole, like a dozen, is a number. A dozen of anything, is 12. A dozen tomatoes is 12 tomatoes, a dozen shoes is 12
shoes, a dozen people is 12 people, etc. Half a dozen is 6, since one half of 12 is 6. So half a dozen tomatoes is 6
tomatoes, etc.
A Mole, is 6.02 X 1023 of anything (so a Mole is HUGE, its 602000000000000000000000). A mole of tomatoes is
6.02 X 1023 tomatoes, a Mole of shoes is 6.02 X 1023 shoes. Half of a Mole is 3.01 X 1023, since one half of 6.02 X 1023 is
3.01 X 1023. So a half Mole of tomatoes is 3.01 X 1023 tomatoes. Half a Mole of atoms is 3.01 X 1023.
A Mole of balls is _________________ balls. Half a Mole of balls is _______________ balls.
A Mole of bananas is ________________ bananas. Half a Mole of bananas is ___________bananas.
The atomic mass of any element is what 1 Mole (which is 6.02 X 1023) of atoms weighs.
For example:
Since the atomic mass of Hydrogen is 1.00 grams (look at the periodic table), 1 Mole (which is 6.02 X 1023 atoms) of
Hydrogen has a mass of 1 gram.
Since the atomic mass of Oxygen is 16.00 grams (look at the periodic table), 1 Mole (6.02 X 1023 atoms) of Oxygen has a
mass of 16.00 grams.
Also, since 1 Mole = 6.02 X 1023 , 6.02 X 1023 atoms of Oxygen has a mass of 16.00 grams (since 16.00 grams of Oxygen is
1 Mole of Oxygen).
Carbon has an atomic mass of 12.0, so 12.0 grams of Carbon is ___ Mole. 24.0 grams of Carbon is __ Moles.
6.00 grams of Carbon is 1/2 a Mole (since 6.00 grams is half of 12.00 grams).
To find out how much 1 Mole of water weighs (or any molecule), add up the atomic weights (look at the periodic table)
of each atom in the molecule and add them up.
For example:
The formula for water is H2O. Each molecule of water has two Hydrogen atoms and one Oxygen atom.
Look at the periodic table. Hydrogen has an atomic mass of 1.00 grams.
Oxygen has an atomic mass of 16.00 grams.
So the Molecular mass of water (what 1 Mole of the water molecule weighs) is 2 X 1.00 grams (since there are 2
Hydrogen atoms) + 1 X 16.00 grams (since there is 1 Oxygen atom) = 18.00 grams [2 X 1.00 + 1 X 16.00 = 18.00].
So 1 Mole of water (or 6.02 X 1023 molecules of water) weighs 18.00 grams. 2 Moles of water weighs 36.00 grams
(2 X 18.00 grams) and 1/2 Mole of water weighs 9.00 grams (1/2 of 18.00 grams).
What is the molecular weight (what one Mole weighs) of sugar (C6H12O6)? ______________.