First balance the equation: you get 3Fe + 4H2O = Fe3O4 +4H2O
Then set up the equations according to the spidey map below.
x 10^25 molec. H2O/ 1 x x x
Multiply the top all together, then divide by the whole bottom half.
Answer: 154.4 g H2
136 g Fe /1 x [tex]\frac{1molFe}{55.85 g Fe}[/tex] x [tex]\frac{1molFe3O4}{3molFe}[/tex] x [tex]\frac{6.02(10x^{23}) molec. Fe3O4 }{1molFe3O4}[/tex]
Multiply the top all together, then divide by the whole bottom half.
Answer: 4.95 x 10^20 Formula units (fu) Fe3O4
8.25 x 10^23 molec. Fe/ 1 x [tex]\frac{1molFe}{6.02(10^{23})molec.Fe}[/tex] x [tex]\frac{4molH2}{3molFe}[/tex]
Multiply the top all together, then divide by the whole bottom half.
Answer: 1.83 mol H2
