How do you find an empirical formula from mass percent?

1 Answer

Assume 100 g of compound. This gives a specific mass for each element measured.

Explanation:

Given that assumption, you divide thru the individual gram quantities by the atomic masses of C, H, and N. You can then get an empirical formula, CnHmNo etc.

There should be many examples of these boards of specific empirical formula problems.

The molecular formula may not be the same as the empirical formula but it is certainly a multiple of the empirical formula.

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