Final answer:
Hydrogen is a better rocket fuel than dimethylhydrazine as it has a higher energy density and burns more efficiently in combustion reactions.
Step-by-step explanation:
In terms of rocket fuel, hydrogen (H2) is considered a better fuel than dimethylhydrazine (CH3NHNH2). This is because hydrogen has a higher energy density and burns more efficiently in combustion reactions.
Hydrogen has a high specific impulse, which refers to the amount of thrust produced per unit of propellant mass. It also has a relatively low molecular weight, allowing rockets to achieve higher speeds and greater payloads.
Overall, hydrogen is a preferred rocket fuel due to its higher energy content and ability to provide more thrust and efficiency in rocket engines.