Question

3Fe + 4H2O <=> Fe3O4 + 4H2

1) How many molecules of H2 are produced?

2) How many oxygen atoms are found in the products?

3) How many moles of Fe3O4 are formed?

4) What is the ratio of the number of moles of Fe atoms to the moles of H2O molecules?

5) How many hydrogen atoms are found in the reactants?

Choices for 1, 2, 3, and 5: 0, 1, 2, 3, 4
Choices for 4: 1/4, 3/4, 4/4

Answer 1

3Fe + 4H2O <=> Fe3O4 + 4H2

1) How many molecules of H2 are produced? 4

2) How many oxygen atoms are found in the products? 4

3) How many moles of Fe3O4 are formed? 1

4) What is the ratio of the number of moles of Fe atoms to the moles of H2O molecules? 3/4 or 3:4

5) How many hydrogen atoms are found in the reactants? 8

Answer 2

1)
4 molecules of Hygdrogen is produced.


2)
4 atoma of Oxygen is produced.

3)
1 molecule of Fe3O4 is formed.

4)
1mole of 3 Fe : mole of 4 H2O

3 :4
=3/4


5) There are 2×4 = 8atoms of hydrogen on Reactant side.