Question

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 Sun’s energy. What challenge do scientists face with this task?

A.Decomposing water requires a high activation energy.
B.The Sun isn't a renewable resource.
C.Decomposing water results in toxic byproducts.
D.Scientists are uncertain what to do with the excess oxygen.

Answer 1

I hope this helps

Step-by-step explanation:

Answer 2

A. Decomposing water requires a high activation energy.

Step-by-step explanation:

The decomposition of water requires a lot of electrical energy or heat input, generated from some primary energy source (fossil fuel, for exemple). This amount of energy has a strong impact on nature and is an expensive process that would increase the economic value of hydrogen f**ls. For this reason, we can conclude that the challenge facing scientists for hydrogen f**l production is that the decomposition of water requires a high activation energy.