Question

volume of hydrogen evolved in reaction of 20 grams of iron with steam

Answer 1

First of all, the basic equation will be:

Fe + H₂O → Fe₂O₃ + H₂

The balanced equation will be:

2 Fe(s) + 3 H₂O(g) → Fe₂O₃(s) + 3 H₂(g)

Hope It Helped You :)

Answer 2

volume has more power than hydrogen and the reaction of 20 grams of iron can and will be melted by steam or fire