Question

Balance the following reactions:
$Fe+H_{2}O\to {Fe}_3{O}_4+H_2\uparrow$

Answer 1

Let us consider the problem:

Reaction:

$Fe+H_{2}O\to F{e}_3{O}_4+H_2$

reactant Products

$Fe=1$ $Fe=3$

$H=2$ $H=2$

$O=1$ $O=4$

Then,balance chemical equation is

$3Fe+4H_{2}O\to F{e}_3{O}_4+4H_2$