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Which represents the empirical formula for a3B9

Justin Parker

in Chemistry

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Karen Wright on March 16, 2019

A3B9 represents a molecular formula. The representation of the empirical formula of this compound is AB3. This is so because the empirical formula is the simplest ratio of the atoms present in the molecule. You get AB3 when you divide the subscripts of A3B9, this is the 3 and the 9, the greatest common factor, which is 3. 3/3 = 1 and 9/3 = 3, so that the subscripts of the empirical formula are the 1 and the 3, which is what AB3 represents. Answer: AB3.


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