HELP PLEASE write a balanced chemical equation of decomposition reaction which is carried out by the electricity

When a septic tank backs up a goes in to clean it out

Use this information to determine the number of calends electrons in the atoms. which of the following correctly compares the stability of the two atoms? a) both are unreactive b) both are highly reactive c) a is unreactive and d is reactive d) a is reactive and d is unreactive

If i add water to oil what will happen