How to Obtain an Empirical Formula

1. Determine the mass in grams of each element present.

2. Calculate the number of moles of each element.

3. Divide each by the smallest number of moles to obtain the simplest whole number ratio.

4. If whole numbers are not obtained in step three, multiply through by the smallest whole number that will give you all whole numbers.

BE CAREFUL! DO NOT ROUND OFF NUMBERS PREMATURELY!

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