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Grams <--> Moles Conversions. Molar Mass. The mass, in grams, of one mole of any substance. Example: Calculate the molar mass of Al 2 O 3. Using Molar Mass as a Conversion Factor. Molar Masses can be expressed by the following conversion factors:. Example Problem.
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Molar Mass • The mass, in grams, of one mole of any substance. • Example: Calculate the molar mass of Al2O3
Using Molar Mass as a Conversion Factor • Molar Masses can be expressed by the following conversion factors:
Example Problem • How many grams of aluminum oxide do you need to make 26.0 moles of aluminum in the following reaction: 2 Al2O3 4 Al + 3 O2
Putting it all together Grams to Grams Conversions
Example Problem • How many grams of oxygen can you make from 204.0 grams of aluminum oxide in the following reaction? 2 Al2O3 4 Al + 3 O2