WAit I just have one tiny little question did your mom dad grandma grandpa helpful I with the question first
        
             
        
        
        
 The limiting  reactant  when 5.6  moles   of aluminium react  with  6.2  moles   of water   is
       water( H2O)
       <u><em>Explanation</em></u>
The  balanced    equation is as below
2 Al +3 H2O  →  Al2O3  +3 H2
The mole ratio  of Al :Al2O3  is 2:1  therefore  the  moles  of  Al2O3
   = 5.6 x1/2  =  2.8  moles
The   mole  ratio  of H2O: Al2O3  is 3:1 therefore  the  moles  of Al2O3  produced 
                  = 6.2  x1/3= 2.067  moles
since  H2O  yield  less  amount  of Al2O3 ,  H2O   is  the limiting reagent.