-Atoms and molecules are extremely small.
-Macroscopic objects contains too many to count of weigh individually.
-Amedo Avagardo proposed that the number of the atoms in 12.00000g of carbon be equal to a constant(this is equal to 1 mol of carbon)
-This value is now called Avogadro's number and forms the basis of all quantative chemistry.
Avogadros Number
6.02x10e23 atoms over mol
http://sciencelost.com/images/mole2.jpg
http://ny-image2.etsy.com/il_fullxfull.95300322.jpg
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