Chapter 12.7, Problem 12.4.2PE

Write "true" or "false" for each statement.
a. We balance chemical equations as we do because energy must be conserved.
b. If the reaction 2 O₃(g)->3O₂(g) goes to completion and all O₃ is converted to O₂ then the
mass of O₃ at the beginning of the reaction must be the same as the mass of O₂ at the end of
the reaction.
way: H₂O₂(l) → H₂(g) + O₂ (g)