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Title: f 2 Al (s) + Fe2O3 (s)---> Al2O3+2Fe ... Hess Law Post by: oblique101 on Nov 9, 2014 f 2 Al (s) + Fe2O3 (s)---> Al2O3+2Fe Delta H rxn= -851.5 kJ
then 1/4 Al2O3 +1/2 Fe----> 1/2 Al +1/4 Fe2O3 Delta H rxn = ? In this case, am I supposed to flip the second equation and multiply by 4 or by 1/4?? HELP! Title: Re: f 2 Al (s) + Fe2O3 (s)---> Al2O3+2Fe ... Hess Law Post by: bio_man on Nov 11, 2014 In this case, am I supposed to flip the second equation and multiply by 4 or by 1/4?? Yes... Sorry for taking so long to answer this simple one :P |