What is it using for splitting up water?
Heat
Electricity
Oxygen
In a fuel cell, what two metals interchange electrons?
Zinc and oxygen
Oxygen and copper
Zinc and copper
Hydrogen fuels cells have double efficiency than internal combustion engine in a real situation
One of the problems of this technology is
The source of hydrogen
The low efficiency
Both are correct
The other main problem with hydrogen is
It is explosive
It is liquid at normal temperature
Both of them
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