Question

select the correct answer. some fuel cells are powered by hydrogen. scientists are looking into the decomposition of water (h₂o) to make hydrogen fuel with the help of the suns energy. what challenge do scientists face with this task? a. decomposing water requires a high activation energy. b. the sun isnt a renewable resource. c. decomposing water results in toxic byproducts. d. scientists are uncertain what to do with the excess oxygen.

Explanation:

Water decomposition is an endothermic process and requires a significant amount of energy to break the chemical bonds in water molecules. This high activation energy is a major hurdle. The Sun is a renewable resource, water - decomposition produces hydrogen and oxygen which are not toxic by - products, and the handling of oxygen is not the main challenge compared to the energy requirement for decomposition.

Answer:

A. Decomposing water requires a high activation energy.