1. The Mole and Gram-Formula Mass

2. The Mole and Gram-Formula Mass
A mole is a collection of 6.02 X1023 things (atoms, ions, molecules, electrons, etc.).
602,000,000,000,000,000,000,000
The mass, in grams, of one mole of an element’s atoms is known as the gram-formula mass.
GFM = gram-formula mass

3. The Mole and Gram-Formula Mass
Ex. (1) What is the gram-formula mass of copper?
________ g/mole
Ex. (2) What is the gram-formula mass of gold?
Ex. (3) What is the gram-formula mass of oxygen
gas? ________ g/mole
63.546

4. The Mole and Gram-Formula Mass
Ex. (4) What is the mass in grams of 1.00 mole of helium gas? ________ g
Ex. (5) What is the mass in grams of 1.00 mole of pure iodine? ________ g

5. The Mole and Gram-Formula Mass
Ex. (6) How many moles of carbon are present in a 1 carat (0.200 g) diamond (yes it's all carbon)?
# moles = given mass
GFM
X =
0.200 g
g/mol
mol

6. The Mole and Gram-Formula Mass
Ex. (7) What is the mass of 2.94 moles of Au?
# moles = given mass
GFM
2.94 mol =
X = X 1
g/mol
579 g

7. The Mole and Gram-Formula Mass
Ex. (8) How many moles of copper are present in g copper cylinder?
# moles = given mass
GFM
X =
g/mol
56.4 g
0.888 mol

8. The Mole and Gram-Formula Mass
Ex. (9) What is the mass of 4.75 moles of oxygen gas?
# moles = given mass
GFM
4.75 mol =
g/mol
X = X 1
152 g

9. The Mole and Gram-Formula Mass
Ex. (10) How many moles are present in a balloon filled with g of helium gas?
# moles = given mass
GFM
X =
g/mol g
mol