Question

An ore contains Fe3O4 and no other iron. The

iron in a 39.3-gram sample of the ore is all
converted by a series of chemical reactions to
Fe2O3. The mass of Fe2O3 is measured to be
10.6 g. What was the mass of Fe3O4 in the
sample of ore?
Answer in units of g

Answer 1

Sierra, Allyson, ? We can help you better if you don't change screen names.

This is done the same way as the earlier question that I showed you. I'll be glad to answer is questions about the procedure but you need to learn to do these yourself.