Re: More incomplete information

You have enough information to solve this problem. This is slightly
easier than the other one you posted. I'll give you some hints to get
you started.

You know the mass of iron in the sample. How many moles is that?
Calculating the number of moles should almost be reflexive at this
point. :)

You can compute the mass lost by reduction. What is the elemental
composition of that mass loss? (hint: very easy answer)

Balance as necessary.

.

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