Table of Contents

• Prequiz...
• 1: What is a mole?
• 2: How much does a mole weigh?
• 3: Molar weights made easy
• 4: ...but not quite that easy
• 5: Using the Periodic Table
• 6: Water
• 7: Practice with sulfuric acid
• 8: ...and caffeine
• 9: Going backwards
• 10: ...and rubies
• 11: Summary

Summary

• A “mole” is approximately 6.022 × 10²³ atoms or molecules.
• The unit of mole is ‘mol’.
• A mol is not a measure of “weight” – rather, it is a measure of “number”.
• Using the periodic table, it is easy to calculate the molar weight of atoms and molecules. Knowing the element number of the atoms in a molecule, you will be able to do a rough estimate of the molar weight of a substance.

 

Learning Outcomes

After completing this module, you should be able to:

• understand what a ‘mole’ is and what it measures
• understand the information available from a periodic table and use it to calculate the weight of 1 mole of any given chemical compound

 

 

 

If you want a printer-friendly version of this module, you can find it here in a Microsoft Word document. This printer-friendly version should be used only to review, as it does not contain any of the interactive material, and only a skeletal version of problems solved in the module.