Question

Which element(s) are not balanced in this equation?


Fe2O3 + 3 CO → Fe + 3 CO2



A.
Only the Fe is unbalanced.


B.
Only the O is unbalanced


C.
Fe and O are both unbalanced.


D.
C and O are both unbalanced

Answer 1

To do this you will have to count how many of each element is on each side of the reaction. How many Fe's are there?
How many O's are there?
How many C's are there?

You can do this, and then whatever numbers are not the same on both side, that is the element that is not balanced.

Tell me if you need help going through this :)

Answer 2

The answer is D I think.

Answer 3

The answer is A.

There are 2 Fe's on the left, and 1 Fe on the right.
There are 6 O's on the left, and 6 O's on the right.
There are 3 C's on the left, and 3 C's on the right.

I hope this can help for future questions :)