Question

select all the correct answers.
which of these factors make hydrogen fuel cells a better option than burning fossil fuels?

• hydrogen fuel cells have a higher energy efficiency
• hydrogen fuel cells create less pollution.
• burning fossil fuels relies on outdated devices and technology.
• hydrogen is the most abundant element in the universe.
• hydrogen fuel cells are more expensive than fossil fuels.

Explanation:

• Higher energy efficiency: Hydrogen fuel cells convert chemical energy to electricity much more efficiently (around 40-60%) than fossil fuel combustion (typically 20-30%).
• Less pollution: When using pure hydrogen, the only byproduct of fuel cells is water vapor, while fossil fuel burning releases greenhouse gases, particulate matter, and toxic pollutants.
• The claim about outdated fossil fuel tech is false; modern fossil fuel systems use advanced technology. Hydrogen's abundance is irrelevant because it is rarely found in pure form on Earth, so it requires extraction. Higher cost is a disadvantage, not a benefit.

Answer:

• Hydrogen fuel cells have a higher energy efficiency
• Hydrogen fuel cells create less pollution.