9.4 Empirical and Molecular Formulas Crossword

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Across
  1. 2. the percent by mass of each element in a compound
  2. 3. a formula that specifies the actual number of atoms of each element in one molecule of a substance
Down
  1. 1. a formula that shows the smallest whole-number mole ratio of the elements of a compound, and might or might not be the same as the actual molecular formula