How many moles of alumminum os needed to react woth 6.34 moles of fe3o4 in thereaction below? 8al + 3fe3o4_ 4al2o3 +9 fe

 The moles of Al  that is needed  to react with  6.34   moles of Fe3O4  is  16.9 moles

Explanation

 8 Al+ 3Fe3O4 →  4 Al2O3 + 9Fe

use of  mole  ratio  of Al: fe3O4 to calculate  the  moles of  Al

The mole  ratio  of  Fe3O4 : Al  is 8:3  therefore the  moles of  Al =

6.34 moles x8/3 = 16.9 moles

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