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3 Written questions

2 Multiple choice questions

  1. A compound that has a specific number of water molecules bound to its atoms.
  2. The 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 True/False questions

  1. percent compositionThe mass in grams of one mole of any pure substance.


  2. Avogadro's numberThe number 6.022 1367 × 10^23, which is the number of representative particles in a mole, and can be rounded to three significant digits: 6.02 × 10^23.