1. mass of one mole of particles
Molar Mass:
mass of one mole of particles
units:
grams per mole
g/mol or g
mol
6.022 x 1023
particles 1
mole

2. Periodic Table Fe S C Hg 55.85g 200.59g 12.01g 32.07g Molar mass
comes from
the periodic
table.
“red numbers
on classroom
board”
One molar mass of carbon, sulfur, mercury, and iron are shown. Each of the quantities contains one mole of the element. Applying Concepts How many atoms of each element are shown?
200.59g
12.01g S C Hg
32.07g

3. from the Periodic Table
2 (H) (O) =
2 (1.01) (16.00) =
18.02 g/mol
from the Periodic Table

4. 6 (C) (H) (O) =
6 (12.01) (1.01) (16.00) =
g/mol

5. 1 (Al) (O) (H) =
1 (26.98) (16.00) (1.01) =
78.01 g/mol

6. 1. A mole of hydrogen gas, H2(g),
Quick Quiz!
1. A mole of hydrogen gas, H2(g),
contains x 1023 ________ of H2(g)
molecules
atoms
moles
grams

7. 2. The molar mass of fluorine (F) is _________.
Quick Quiz.
2. The molar mass of fluorine (F) is _________.
6.02 x 1023 mol
19.00 g
19.00 g/mol
6.02 x 1023 atoms

8. NH3 1 (N) + 3 (H) = 1 (14.01) + 3 (1.01) = 17.04 g/mol
Quick Quiz.
3. Calculate the molar mass of ammonia.
45.03 g/mol
17.04 g/mol
15.01 g/mol
12.97 g/mol
NH3
1 (N) (H) =
1 (14.01) (1.01) =
17.04 g/mol 8

9. Quick Quiz.
4. Calculate the molar mass of ammonium sulfate.
g/mol
g/mol
g/mol
g/mol
(NH4)2SO4
g/mol
2 (N) (H) (S) (O) =
2 (14.01) (1.01) (32.07) (16.00) =