Respuesta :

  The reaction is the decomposition of hydrogen peroxide:  

2(hydrogen peroxide) yields 2(water) + diatomic oxygen gas  

The enzyme 'catalase' catalyzes this reaction in living systems (with hydrogen peroxide-- H2O2--acting as the substrate).

may be wrong check work

Reactants are part of the left side and products are part of the right side.

Knowing this information, we can conclude that:

2H2O = Reactants

2H2O+O2 = Products

Hope I helped!