How many moles of H2O2 are required to react with 8moles of H2O2

Answer 1

depends on the reaction equation.
In any case, I think H2O2 does not react with H2O2

Answer 2

Another confusing question. Typo perhaps.

Answer 3

Could you posibly mean
2H2O2 ==> 2H2O + O2
So it will require 8 mols H2O2 to react with the other 8 mols H2O2.