Monday, January 10, 2011

Measurements in Chemistry

What is atomic mass?
      Is the mass of one mole of atoms

What is a dozen?
      12 of any given object

What is a case?
       24 of any given object

What is a gross?
      144 or 12-dozen

What is a mole?
      6.02x10^23


How many planet Earth's are needed to have a mole of people?
      1 mole of people = 6.02214179x10^23
      1 planet (earth) = 6.6 billion people (approx.)
      Number of planets = 1x10^14
 

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