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# What is the likelihood that hydrogen $\left(\mathrm{H}_{2}\right)$ will become a widely used fuel and that the "hydrogen economy" will become a reality? I...

## Question

###### What is the likelihood that hydrogen $\left(\mathrm{H}_{2}\right)$ will become a widely used fuel and that the "hydrogen economy" will become a reality? In particular, what are the advantages and disadvantages of $\mathrm{H}_{2}$ as a fuel? What would be necessary for a significant conversion to a "hydrogen economy"?

What is the likelihood that hydrogen $\left(\mathrm{H}_{2}\right)$ will become a widely used fuel and that the "hydrogen economy" will become a reality? In particular, what are the advantages and disadvantages of $\mathrm{H}_{2}$ as a fuel? What would be necessary for a significant conversion to a "hydrogen economy"?

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