5. Identify the compound or molecule and write its formula.
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A chemical formula is an expression that shows the elements in a compound and the relative proportions of those elements. ... Molecular formulas do not indicate how the atoms are arranged in the molecule. The empirical formula tells the lowest whole-number ratio of elements in a compound
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The empirical formula is the simplest whole number ratio of all the atoms in a molecule. For example: The molecular formula for glucose is C6H12O6. The molecular formula indicates the exact number of atoms in the molecule.
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