Final answer:
The reference material does not provide the maximum zero fuel weight of the Challenger 650, but it does offer valuable context about aircraft weights, fuel, and design in the field of aerospace engineering.
Step-by-step explanation:
The maximum zero fuel weight for the Challenger 650 is not directly stated within the provided reference material. Zero fuel weight is a term specific to the field of aviation and refers to the maximum weight of the airplane without any usable fuel. However, the reference material includes examples of aircraft weights and comparisons between the energy densities of different fuels, like lithium-ion batteries and gasoline, and how it impacts the design and capacities of various transport vehicles, including aircraft.
For example, the reference to a Boeing 737 and its capacities provides a context of airplane weights, while the remarks about battery and fuel weights demonstrate the practical challenges faced in aerospace engineering relating to vehicle design limitations and energy requirements. Although this doesn't answer the question about the Challenger 650's maximum zero fuel weight directly, it does provide insight into the importance of such specifications in aircraft design and performance.