Empirical and Molecular Formulas.

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8 Terms

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What does the empirical formula give?

The smallest whole number ratio of atoms of each element in a compound.

2
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What does the molecular formula give?

The actual numbers of atoms of each type of element in a molecule.

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What's the molecular formula made up of?

A whole number of empirical units.

5
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How can you calculate its molecular formula?

If you know the empirical formula and the molecular mass of a compound.

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What's step 1 on calculating molecular formula?

Find the empirical mass, which is the mass of the empirical formula.

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What's step 2 on calculating molecular formula?

Divide the molecular mass by the empirical mass, which tells you how many multiples of the empirical formula are in the molecular formula.

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What's step 3 on calculating molecular formula?

Multiply the empirical formula by that number to find the molecular formula.