9 The Mole



  • Define the mole and explain how the numerical value of the mole was determined.
  • Convert between grams and moles using molar mass.
  • Convert between moles and number of molecules using Avogadro's number.
  • Determine percent composition of a compound.
  • Determine empirical and molecular formulae.

Academic Standards

C.1.16 Calculate percent composition by mass of a compound or mixture when given the formula.  Determine the empirical and/or molecular formula from experimental data.


  1. The Mole and Mole Conversions

  2. Percent Composition and Empirical Formulas

  3. Formula of a Hydrate and Mole Quiz

Recent Files

  • Chemical Quantities KEY.pdf   244k - Dec 9, 2009, 5:48 AM by Jeremy Horner (v2)
    ‎Answer key for the chemical quantities review.‎
  • Percent Composition and Empirical Formula (Autosaved).pdf   256k - Nov 12, 2009, 3:48 PM by Jeremy Horner (v2)
    ‎Percent composition and empirical formula notes and problems.‎
  • Chemical Quantities.pdf   181k - Nov 12, 2009, 3:48 PM by Jeremy Horner (v2)
    ‎Chemical Quantities review problems‎
  • Mole Conversions.pdf   264k - Dec 8, 2008, 6:50 AM by Jeremy Horner (v3)
    ‎Mole conversions worksheet with sig figs and balancing equations review. ‎
  • The Mole Notes.pdf   285k - Dec 5, 2008, 7:55 AM by Jeremy Horner (v2)
    ‎Notes on the mole.‎
Showing 5 files from page Mole Files.

Recent Announcements

  • Start of Second Semester Welcome back!  Our new unit, Stoichiometry, has a page up now.  Expect more soon!
    Posted Jan 5, 2009, 8:01 AM by Jeremy Horner
  • End of First Semester! I hope finals went well!  With the first semester over I have removed links to the first semester chapters.  If you still need that material for any reason just let ...
    Posted Dec 19, 2008, 7:50 AM by Jeremy Horner
  • Chemical Bonds Review Key Answer key with selected answers has been posted in the files section of Unit 7 Chemical Bonds.  I also have an answer key available in my room.Currently Lewis structures ...
    Posted Nov 24, 2008, 11:38 AM by Jeremy Horner
  • Chemical Bonds Review The review has been posted for Chemical Bonds.  Go to the Files section on Unit 7: Chemical Bonds.The answer key will be posted sometime over the weekend, so stay ...
    Posted Nov 21, 2008, 8:41 AM by Jeremy Horner
  • Chemical Bonds Unit Assignments Most assignments for this chapter are not available as digital copies on the website.  If you need any of the naming worksheets, please drop by my room.  I have extra ...
    Posted Nov 17, 2008, 7:41 AM by Jeremy Horner
Showing posts 1 - 5 of 18. View more »

Other Resources

Google The best search engine ever! 
Periodic Videos University of Nottingham element videos (the site I showed in class) 
Printable Periodic Tables Several different versions of the periodic table, including ones with atomic radius, oxidation number, electronegativity, and more! 
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