Question

What is the limiting react any when 5.6 moles of aluminum react with 6.2 moles of water

Answer 1

You first need to show the amount of aluminum you have and how much water you need to make a mole ratio. The one that isn't in excess is the limiting reactant

5.6 mol of Al*2/1=11.2 mol Al

6.2 mol of H2O*3/1=18.6 mol H2O

11.2<18.6

Al<H2O

This could be that aluminum is the limiting reactant

:)