Determine the empirical formula of a compound containing 47.9% potassium, 5.5% beryllium and 46.6% fluorine by mass.
(Atomic weight of Be=9, F = 19, K = 39).

Explanation

To determine the empirical formula of the compound containing 47.9% potassium (K), 5.5% beryllium (Be), and 46.6% fluorine (F) by mass, follow these steps:

### Step 1: Write down the given data
- Percent by mass of Potassium (K) = 47.9%
- Percent by mass of Beryllium (Be) = 5.5%
- Percent by mass of Fluorine (F) = 46.6%
- Atomic mass of Potassium (K) = 39 g/mol
- Atomic mass of Beryllium (Be) = 9 g/mol
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