Fe questions

From: Hugh Janus (HughJanus_at_bigfoot.com)
Date: 06/12/04 

Date: Sat, 12 Jun 2004 20:55:41 +1200

The amount of Fe in a 1.0230g sample of the iron ore hematite Fe2 O3, was
determined as follows:
the sample was transferred to a 250ml conical flask and completely dissolved
in diluted hydrochloric acid. All the iron was then present as Fe2+ (aq).
The contents of the flask were then titrated with a solution of potassium
permanganate of concentration 0.0195 mol L-1 until the first permanent pink
colour was obtained. At this point, 24.35ml of permanganate had been added.
Calculate:
The percentage of iron. Fe, in the ore;

The percentage of hematite, Fe2 O3 in the ore..

HOW?
HELP!