Fe3O4 + 4H2 yields 3Fe + 4H2O, 49grams of Fe3O4 produces 78.25% yield of Fe. How many grams are produced?

Answer 1

See how I did the previous question on the same topic.

Fe₃O₄ + 4H₂ ==> 3Fe + 4H₂O

Find moles Fe₃O₄ by dividing mass by molar mass

Find moles theoretical moles of Fe produced. It will be 3 x the moles of Fe₃O₄ used (see stoichiometry)

Find theoretical mass of Fe₃O₄ by multiply theoretical moles by molar mass

Find grams by multiply mass by 0.7825.