Areaction involves the following elementary steps:

h2(g)+o2(g) > h2o2(g)

h2(g)+h2o2(g) > 2h2o(g)

a)what is the sum of the two reactions, retaining all chemical species? remember to include states of matter.

b)what is the net reaction when reactive intermediates are cancelled? include states of matter.

Explanation:

      H₂ + O₂ → H₂O₂

      H₂ + H₂O₂ → 2H₂O

The sum of the two equations is a combined equation where all the compounds on the reactant sides are written on the Left hand side and the products are all on the right hand side:

     We then have:

    H₂ + H₂ + O₂ → 2H₂O

        combining the two repeating hydrogen gas:

                    2H₂ + O₂ → 2H₂O

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.