The diagram shows the movement of particles from one end of the container to the opposite end of the container. a cylindrical container is shown sealed at the top and bottom, with a solid layer with one small hole in it in the middle. the top part of the container has many small balls in it; the bottom part has only 4 balls. arrows point down through the hole in the center layer. which event is most likely occurring? diffusion because particles move from regions of high concentration to regions of low concentration diffusion because particles move from regions of low concentration to regions of high concentration effusion because there is a movement of a gas through a small opening into a larger volume effusion because there is a movement of a gas through a large opening into a smaller volume