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. Some fuel cells are powered by hydrogen. Scientists are looking into the decomposition of water (H2O) to make hydrogen fuel with the help of the Sun’s energy. What challenge do scientists face with this task?

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MissPhiladelphia

 The challenge that
scientists face with the decomposition of water (H2O) to make hydrogen fuel
with the help of the Sun’s energy is the source of hydrogen. Sun’s core is made
up of hydrogen and helium and its temperature is so high that even the metal
with the highest melting point melts easily. It is impossible to extract this.

Answer:

A.  Decomposing water requires a high activation energy.

Explanation:

  • As about 3000°C of energy is required for the more than half of the water molecules to get decomposed and is called as splitting of water. Requires excess of energy to over the barriers of activation.

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