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

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

:)