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Moley, Moley, Moley

Moley, Moley, Moley. Moles are a Chemist best friend. What is a Mole?. A mole is not a critter that burrow’s under the ground. A mole is not a little man that lives under a bridge – that’s a troll A mole is a group of objects – like a dozen is 12 or a gross is 144.

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Moley, Moley, Moley

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  1. Moley, Moley, Moley Moles are a Chemist best friend.

  2. What is a Mole? • A mole is not a critter that burrow’s under the ground. • A mole is not a little man that lives under a bridge – that’s a troll • A mole is a group of objects – like a dozen is 12 or a gross is 144

  3. Why do we use the word mole? • The word mole come form the Latin word moles which means a pile of things. • In the case of a mole we mean 6.02x 10^23 objects, molecules, formula units or atoms. • 1 dozen = 12 • 1 pair = 2 • 1 mole = 6.02 x 10^23

  4. Why 6.02 x 10^23? • The number is based on the C-12 isotope. • 12 g of the C-12 isotope has exactly 6.02 x 10^23 atoms. • The atomic mass is therefore a molar mass • So 32.066 grams of Sulfur has exactly 6.02 x 10^23 atoms of sulfur.

  5. Atomic Mass and the Mole • One mole of any element has exactly 6.02 x 10^23 atoms of that element. • You couldn’t possible count that number it is too large.

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