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

2. Periodic Table Fe S C Hg 55.85g 200.59g 12.01g 32.07g
1 molar mass of C, S, Hg, and Fe are shown. Each of the quantities contains 1 mole. How many atoms of each element are shown?
200.59g
12.01g S C Hg
32.07g

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

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 6.02 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 WS
Moles and Molar Mass
#4-5
p. 113 #33ab, 34ab, 32
g/mol
2 (N) (H) (S) (O) =
2 (14.01) (1.01) (32.07) (16.00) =