When the equation Fe + O2→Fe2O3 is balanced, the coefficient for O2 is:

a. 4

b. 3

c. 1

d. 2 D?

Question

6 May, 01:52

+1

Answers (2)

Know the Answer?

Junior · Answer 1

B.) Balanced equation is : 4Fe + 3O2 - - - > 2Fe2O3. So coefficient for O2 is 3.

Ali Murray · Answer 2

The fully balanced equation would be

4Fe + 3O2 - - > 2Fe2O3

for each side, we have

4 Fe (4 iron)

6 Oxygen (O)

So the final answer is choice B) 3

When the equation Fe + O2→Fe2O3 is balanced, the coefficient for O2 is:a. 4b. 3c. 1d. 2 D?