The three objects in the drawing are connected by string

a lot of it means it can be "burned" for energy and sold at one price. if it is scarce, the price will go up

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.

i already answered it by 34/s