Assume 3 molecules of Fe react according to the following equation.3Fe + 4H2O Fe3O4 + 4H2How many molecules of H2 are produced? moleculesHow many water molecules are required? moleculesWhat is the mole ratio of Fe to H2O? How many hydrogen molecules (H2) are involved in this reaction? molecules

4 molecules

4 molecules

0.75

4 molecules

Explanation:

Based on the reaction:

3Fe + 4H₂O → Fe₃O₄ + 4H₂

3 moles of Iron (Fe) reacts with 4 moles of water (H₂O) producing 3 moles of ferrous ferric oxide (Fe₃O₄) and 4 moles of hydrogen (H₂).

Thus, if 3 molecules of Fe react:

How many molecules of H₂ are produced?

4 molecules

How many water molecules are required?

4 molecules

What is the mole ratio of Fe to H₂O?

3 moles Fe per 4 moles of H₂O. Ratio is:

3/4 = 0.75

How many hydrogen molecules (H₂) are involved in this reaction?

Again, 4 molecules