Question

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

Answer 1

Answer:

$AB_{3}$

Step-by-step explanation:

Given : $A_{3}B_{9}$

To Find : Which represents the empirical formula for$A_{3}B_{9}$?

Solution:

Definition of Empirical Formula - A formula that gives the simplest whole-number ratio of atoms in a compound.

$A_{3}B_{9}$

To reduce it in simplest form

Divide the subscript numbers by 3

So, the resultant : $AB_{3}$

Thus the empirical formula for $A_{3}B_{9}$ :

$AB_{3}$

Answer 2

Empirical formula is the simplest ration between atoms present in a molecule. This means that, since 9 can be divided by 3 (A3B9), the correct answer is the first option AB3.