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Review of Fundamentals (2)

Review of Fundamentals (2) - Formulas Chemical Equations...

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1 The mole: Since atoms are very tiny and light… more convenient to consider a collection of them: 1 mole = 6.022 x 10 23 units of something = Avogadro’s number (N A ) This is the number of atoms in exactly 12.000 g of 12 C. Mass (g) Moles (mol) Number of Atoms Formulas, Chemical Equations and more... Atomic weight gives: C 12.011 Molecular weight (MW) of a compound = sum of atomic weights of its constituent elements E.g. C 7 H 16 NO 2 +
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