Answer:
The equation is already balanced
Explanation:
1. List all the elements of each side of the equation
[tex]2H_2 + O_2 \rightarrow 2H_2O[/tex]
Products:
Result in:
2. After listing, when you have an imbalanced equation, there will be different numbers of elements on both sides, in this case you have the same number of elements on both sides, meaning that the equation is already balanced.