Hydrogen and Fuel Cells
AP Environmental Science · Learn by Concept
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AP Environmental Science › Hydrogen and Fuel Cells
Which of the following is NOT a drawback of utilizing hydrogen as a fuel source?
Hydrogen has a low energy density by weight.
Hydrogen has a low energy density by volume.
Hydrogen is very challenging and dangerous to transport.
The input of energy to produce hydrogen is often greater than the energy of the resulting hydrogen.
Existing infrastructure for manufacturing and transporting hydrogen is minimal to nonexistent.
Explanation
Hydrogen is very challenging to transport and it requires a large energy investment to produce it. While hydrogen has a low energy density by volume, it actually has a very high energy density by weight. This has to do with the fact that hydrogen, discussed in this context, is a gas.