1. Mole Conversions

2. Mole Conversion Factors
atoms to moles
6.022 x 1023 atoms / 1 mole
grams to moles
molar mass / 1 mole
volume to moles
22.4 L / 1 mole

3. Atoms to Moles…
How many moles of hydrogen are there in 1.28 x 1025 atoms of hydrogen?
Don’t forget to use the exponent button on your calculator!!

4. Grams to Moles… If there are 45.8 g of KNO3, how many moles are there?
Molar mass is the collective mass of each atom in the compound

5. Volume to Moles… How many moles of oxygen gas are in a 5.5 L tank?
HINT: Use 22.4 L/mole

6. Mole Ratios
A balanced chemical equation that tells how many moles of each compound are used in the reaction
The possibilities of the mole ratios are how the moles relate to each other in the chemical reaction
Chose the right mole ratio for the unknown amount (unknown/known)

7. Mole Ratio Example…
Sodium bicarbonate decomposes to solid sodium carbonate, carbon dioxide gas and water vapor
__NaHCO3(s)  __Na2CO3(s) + __CO2(g) + __H2O(g)
2NaHCO3(s)  Na2CO3(s) + CO2(g) + H2O(g)
2 moles NaHCO3 / 1 mole Na2CO3
2 moles NaHCO3 / 1 mole CO2
2 moles NaHCO3 / 1 mole H2O
1 mole Na2CO3 / 2 moles NaHCO3
1 mole CO2 / 2 moles NaHCO3
1 mole H2O / 2 moles NaHCO3