Hydrogen is generated by passing hot steam over iron, which oxidizes to form Fe3O4, in the following equation:

Question

a. if 625 g of Fe3O4 is produced in the reaction, how many moles of hydrogen are produced at the same time?
b. how many moles of iron would be needed to generate 27 g of hydrogen?

Answer 1

Just follow the stoichiometry example I gave you earlier.

Answer 2

I don't have answer

Answer 3

Someone post the awnser?