Fe3O4 + 4 H2 -> 3 Fe + 4 H2O

What mass (g) of Fe3O4 would be needed to
react with 1.38 x 10^3 mol H2?

6 answers

Damon answered your question on your first post and I answered the one on moles below that. What's the problem?
The answer doesn't match with Damon's post. His mass came out way too high.
Do you want me to look at it and repost here if needed?
Yes please!
Yes, Damon's response, as noted in that response, is he though it was 1.38E3 L (and not mols).
Here is the question again.
Fe3O4 + 4 H2 -> 3 Fe + 4 H2O

What mass (g) of Fe3O4 would be needed to
react with 1.38 x 10^3 mol H2?


1.38E3 mols H2 x (1 mol Fe3O4/4 mols H2) = 345 mols Fe3O4
g Fe3O4 = mols Fe3O4 x molar mass Fe3O4
g Fe3O4 = 345 x 231.54 = 7.99E4 grams.
I just looked at Damon's response again and I don't see anything wrong with it. The answer I posted is almost the same as the answer he posted. The only difference is he rounded the molar mass of Fe3O4 from 231.54 (which I used) to 232. Other than that there is no difference.