unit: chemical quantities volume conversions with the mole day 4 - notes
TRANSCRIPT
Unit: Chemical QuantitiesVolume Conversions with the
Mole
Day 4 - Notes
After today, you will be able to…
•Calculate the volume of a gas at STP given the number of moles and vice versa•Perform two step volume conversions (Ex: atoms to liters)
Mole Volume Conversions
For one mole of any gas at STP, the volume occupied will be 22.4 liters.
STP = standard temperature and pressure= 0 degrees Celsius and 1 atmosphere
1 mole gas = 22.4 L gas
Example: How many moles of Helium gas will occupy a volume of 149.3L at STP?
K: 149.3L HeU: ? mol He
149.3 L He1
x22.4 L He
1 mol He .= 6.665 mol He
2-Step Conversions with Volume, Mass, and Particles
How to convert moles into particles and vice versa by using the conversion factor…
1 mole = 6.02x1023 atoms, molec. or F.U.
How to convert moles into grams and vice versa by using the conversion factor…
1 mole = atomic mass in grams
How to convert moles into liters and vice versa by using the conversion factor…
1 mole = 22.4 L
We have already learned…
All Roads Lead to the Mole
MOLE
1 mole = 6.02 x 1023 particles
1 mole = 22.4 Liters
1 mole = (Molar Mass) grams
# of particles
(atoms, molecules or formula units)
# of grams
# of liters
Example: What volume would 4.32x1023 atoms of Krypton gas occupy at STP?
K: 4.32x1023 atoms KrU: ? L Kr
4.32x1023 atoms Kr
1x6.02x1023 atoms Kr 1 mol Kr . =
16.1 L Kr
x 22.4 L Kr .
1 mol Kr .
Time to Practice!
Complete WS 4
HOMEWORK: