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What is the empirical formula of a compound composed of 27.3 g potassium (K) and 5.59...

What is the empirical formula of a compound composed of 27.3 g potassium (K) and 5.59 g oxygen (O)?

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Answer #1

The gram atomic masses of K and O are 39.1 g/mol and 16 g/mol respectively.
27.3 g of K corresponds to moles.
5.59 g of O corresponds to moles
The ratio of the number of moles of K to the number of moles of O is 0.698 : 0.349 or 2 : 1.
The empirical formula is .

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