# How would you balance the following equation: Fe+O2 --> Fe2O3?

##### 1 Answer

#### Explanation:

Step 1: Tally the number of atoms based on subscript.

left side: Fe = 1; O = 2

right side: Fe = 2; O = 3

Step 2: Start balancing the simple molecules first, in this case the

left side: Fe = 1; O = 2 x **6**

right side: Fe = 2; O = 3

Since there are now 6

left side: Fe = 1; O = 2 x 3 = **6**

right side: Fe = 2 x **4**; O = 3 x **6**

Step 3: Now balance the rest of the equation.

left side: Fe = 1 x **4**; O = 2 x 3 = **6**

right side: Fe = 2 x 2 = **4**; O = 3 x 2 = **6**

The equation is now balanced.