What Is A Balanced Chemical Equation -

2H2+O2→2H2O2 cap H sub 2 plus cap O sub 2 right arrow 2 cap H sub 2 cap O

: List how many atoms of each element are on the reactant (left) and product (right) sides. what is a balanced chemical equation

This is because you have two oxygen atoms on the left but only one on the right. To fix it, we add coefficients: 2H2+O2→2H2O2 cap H sub 2 plus cap O