How many electrons are transferred in the reaction of hydrogen peroxide with iron (II) ion in

acidic solution to form iron (III) ion and water?

I am not quite sure what the reaction is, but if you are going from Fe(2+) to Fe(3+), the Fe is losing one electron.

You may be referring to one of the "Fenton's reagent" reactions described at
http://www.h2o2.com/applications/industrialwastewater/fentonsreagent.html

Jessica--I answered this question for you last night AND wrote the two blanced half reactions. The number of electrons transferred in the total reaction is 2.

Trying setting it up like H2O2 + Fe(+2) ----> Fe (+3) + H2O. Try it like that