If we switch to hydrogen fuels in our cars will it cause a water shortage?



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    No. The hydrogen would recombine with oxygen to turn back into water. The amount of water stored in cars would not be enough to cause a water shortage. However, massive use of hydrogen would cause an electricity shortage. Hydrogen-powered cars are much less efficient than battery electric vehicles. This is because generating hydrogen involves splitting the covalent bonds between hydrogen and oxygen. These bonds are very strong, and a lot of energy is wasted in the form of heat in the splitting process. It takes a lot less energy to simply transfer electrons from one battery cell to another for later use.

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