As an AI language model, I cannot see the drawings you're referring to. However, in general terms, the disappearance of petrol in an open container can be explained by the kinetic molecular theory of matter. According to this theory, all matter is made up of small particles (atoms or molecules) that are in constant motion. These particles have kinetic energy, which means they are moving around and colliding with each other and with the walls of the container, creating pressure.
In an open container, the petrol molecules at the surface of the liquid have enough kinetic energy to overcome the attractive forces between them, allowing them to escape into the surrounding air as vapor. As more and more of these molecules escape, the concentration of petrol molecules in the liquid decreases, which allows more molecules to escape until eventually, all the petrol has evaporated.
In conclusion, the disappearance of petrol in an open container can be explained by the kinetic molecular theory of matter, which states that the motion and collisions of molecules lead to their escape from the liquid phase into the gas phase.
Why the petrol in open container dissapeared in terms of kinetic molecular theory of matter
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