Question

How many moles of Al are in Al2(SO4)3:

A) 2 moles
B) 3 moles
C) 5 moles
D) 6 moles

Answer 1

In the compound Al2(SO4)3, there are two aluminum atoms for each formula unit, which means there are 2 moles of aluminum per mole of aluminum sulfate.

Step-by-step explanation:

The student asked "How many moles of Al are in Al2(SO4)3":

To answer this question, we should look at the chemical formula Al2(SO4)3. This formula indicates that there are two aluminum (Al) atoms for every one formula unit of aluminum sulfate. Therefore, in one mole of Al2(SO4)3, there are two moles of aluminum atoms. The correct answer to the student's question is A) 2 moles of Al.