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3 Written questions

2 Multiple choice questions

  1. A formula that specifies the actual number of atoms of each element in one molecule or formula unit of the substance.
  2. A formula that shows the smallest whole-number mole ratio of the elements of a compound, and may or may not be the same as the actual molecular formula.

2 True/False questions

  1. molar massThe SI base unit used to measure the amount of a substance, abbreviated mol; one mole is the amount of a pure substance that contains 6.02 × 10^23 representative particles.


  2. percent compositionThe percent of mass of each element in a compound.