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Determine the empirical formula of a compound containing 47.9% potassium, 5.5% beryllium and 46.6% fluorine by mass.

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Determine the empirical formula of a compound containing 47.9% potassium, 5.5% beryllium and 46.6% fluorine by mass. (At. weight of Be = 9 ; F = 19 ; K = 39) Work to one decimal place.

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K =47.9%, Be 5.5%, F = 46.6%

Empirical formula K2Be1F4 = K2BeF4

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