Some fuel cells are powered by hydrogen. scientists are looking into the decomposition of water (h2o) to make hydrogen fuel with the of the sun’s energy. what challenge do scientists face with this task?

this is because of

Hydrogen storage: directly as molecular hydrogen, and by chemical reaction with matter, in metal hydrides, by CO2, carbon–carbon chain-linking, and reduction to hydrocarbons.

• Hydrogen end use: fuel cells and combustion.which is risky

i just calculated it all out, and not including weekends, and all the different days off. as of this school year (2018-2019) students are spending 2198 hours in school this year