Final answer:
The injector can draw fuel gas into the chamber at a negative gauge pressure of 25.0 atm, demonstrating how pressure differentials are essential in systems like diesel engines and high-pressure gas storage.
Step-by-step explanation:
The injector allows oxygen at the higher pressure to draw the fuel gas into the chamber even when the fuel gas pressure is comparatively lower, such as a negative gauge pressure of 25.0 atm. This is possible due to the principles governing the behavior of gases and the pressure differential, which is critical in the functioning of various systems such as diesel engines and oxygen tanks for deep-sea divers. In the context of a diesel engine, air is compressed to a high temperature without the need for a spark plug through adiabatic compression, enabling injection and ignition of fuel. Safety considerations are also taken into account when storing gases at high pressures, as exemplified by the cylinder designed with a safety factor. Both this safety aspect and the ability of an injector to operate effectively at lower pressures of fuel gas illustrate the applications of the relationship between pressure, temperature, and volume in real-world engineering situations.