Percentage of Iron in Steel Wool

[ynii]

My first SAC for chemistry is a practical write up explaining my answers and such

We were allowed three titres in which I was not able to achieve concordant titres, what may have been the reason? directly related to Fe and H2SO4 being heated and then titred with KMnO4

Also I was told that the percentage may be over 100% how would this relate to my practical?

Thanks for any help I get.

[misaki]

Maybe you tirated way passed the end point or you didn't clean your equipment properly..