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## Homework Statement

How would I find the average concentrations of Fe(SCN)

^{+2}, Fe

^{3+}, and SCN

^{-}where the equation is Fe

^{3+}+ SCN

^{-}→Fe(SCN)

^{+2}and the K

_{eq}was found to be 394.

## Homework Equations

I know the equation for K

_{eq}=[Fe(SCN)

^{+2}]/([Fe

^{3+}]*[SCN

^{-}])

but I have no idea how what other equations to use.

## The Attempt at a Solution

and I haven't had any attempts at solving it