You just found a bottle labeled "iron fluoride". Oh dear, what is that?! Compounds of transition metal compounds are supposed to be named with a roman numeral indicating the charge of the cation because they aren't predictable. You'll have to determine the empirical formula of this compound using experimental data so that you can fix the name on the label.
A 6.4845 sample of "iron fluoride" was found to contain 3.2093 g of Fe and 3.2752 g of F. Use this data to determine the following:
Moles of Fe in the sample
Moles of F in the sample
Mass % of Fe, based on experimental data.
Mass % of F, based on experimental data.