Why can you compress a gas to fit into a smaller space?

Gas molecules generally tend to be very spread apart, and not compacted tightly together (like solids). That means you can "bring" the molecules closer together by compressing them into a smaller space.

If you don't understand, think about a train. If 2 strangers got on an empty carriage, they would probably sit pretty far apart (maybe even opposite ends of the carriage). This doesn't mean that 2 people can fit in the carriage only if they sit at opposite ends though - you can bring those 2 people together and make them sit next to each other, and they'd take up much less space.

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

hope this : d

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.