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A hydrogen fuel cell is more efficient than a combustion reaction because very little of the released energy is released as
1. heat
2. chemical energy
3. electrical energy.
When used at home, a fuel cell eliminates the need for
1. oxygen
2. hydrogen
3. an electrical grid because the cell is portable.

Respuesta :

chemical energy

 hydrogen

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Answer:

cemical energy and hydergon

Explanation:

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