What set of coefficients, respectively, balance this equation? h2o2 → h2o + o2 a) 1 → 1,2 b) 2 → 2,1 c) 2 → 2,2 d) 4 → 4,1

C) 2,2

Explanation: In the product H2O2, there are 2 hydrogen atoms and 2 oxygen atoms. H2O has two hydrogen atoms, but not oxygen atoms. So to balance the equation we add the coefficient 2 in front of H2O. Then we also have to add a coefficient 2 in front of H2O2 in order to balance it out.

Hope this helps :)