Question

Which represents the empirical formula for A3B9? AB3 AB2 A3B9 A9B27

Answer 1

the ampirical formula of A3B9 IS...
AB3

Answer 2

The empirical formula of the given molecular formula is $AB_3$

Explanation:

Empirical formula is defined as the formula in which the atoms in a compound are present in lowest whole number ratio.

We are given:

Molecular formula of the compound = $A_3B_9$

To make the atoms to the lowest whole number value, we divide the atoms of each element by '3'

Empirical formula of the compound = $A_{(3/3)}B_{(9/3)}=AB_3$

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