In this exercise we will investigate the ratio of the volume of fuel and air combined in an engine. This problem will be a little more complicated, because fuel and air normally exist as different states of matter. Fuel is normally a liquid, while air is a gas. Most of you probably have at least a vague idea of the size of container needed to hold 17 ounces of water. To solve the problem, use the density of both air and jet fuel.
Density is the ratio of the mass to the volume of any substance.
The density of many liquids can be found in textbooks and is usually referenced to the density of water. The density of the air changes with altitude. At sea level, the density of air is 1.222 kilograms per cubic meter. For additional information, click on air properties definitions and density . As stated earlier, it takes 17 ounces of jet engine fuel mixed with 1000 ounces of air for the proper mix to operate a jet engine.