Which of the following is a disadvantage in using hydrogen fuel cells instead of gasoline engines in vehicles?
No distribution network of hydrogen fuel is in place
It is difficult to store hydrogen safely
Hydrogen fuel is not really a source of energy, but rather is a way to store energy
Hydrogen fuel must be produced, most likely form water, by using another energy source
All of the above
The numerical value of the Faraday constant is approximately 96,500. This value represents ____?
The number of electrons required to produce one mole of electrical charge
The number of electrons required to produce a charge of one coulomb
The number of ions produced by removing one mole of electrons
The electrical current produced by transferring one mole of electrons
The coulombs of charge carried by one mole of electrons
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