chem

a hydrated iron chloride compound was found to contain 20.66% Fe, 39.35% Cl, and 39.99% water, determine the empirical formula of this hydrated compound

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  1. assume 100 grams
    20.66 grams Fe=xxx moles Fe
    39.35 frams Cl=yyy moles Cl
    39.44 grams water=zzz moles H2O

    determine xxx,yyyy,zzzz
    then divide all be the lowest of the three.

    the resultant numbers should give you the subscripts

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  2. FeCl2*2h2o

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