Answer:
See explanation
Step-by-step explanation:
FeO3(s) + 3H2(g) ------> Fe(s) + 3H2O(l)
The balanced molecular reaction equation between solid iron III oxide and hydrogen gas has been shown above.
Remember that in writing balanced reaction equations, the number of atoms of each element on the right hand side, must be the same as the number of atoms of the same element on the left hand side. This is the principle of balancing chemical reaction equations.