Molar Mass and Mass Percent Calculation Quiz
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Questions and Answers

According to the Law of Multiple Proportions, if two elements can combine to form more than one compound, the masses of one element that combine with a fixed mass of the other element are in the ratio of:

  • Fractional numbers
  • Irrational numbers
  • Small whole numbers (correct)
  • Large whole numbers
  • In the example given for the Law of Multiple Proportions, the masses of oxygen (16g and 32g) that combine with a fixed mass of hydrogen (2g) have a ratio of:

  • 1:2 (correct)
  • 3:1
  • 2:1
  • 1:1
  • According to Gay Lussac's Law of Gaseous Volumes, the volumes of hydrogen and oxygen that combine to form water vapor have a ratio of:

  • 2:1 (correct)
  • 3:1
  • 1:1
  • 1:2
  • Dalton's Atomic Theory states that atoms of the same element are _____.

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