The gas particles diffused from a region of high concentration (front bench) to a region of low concentration (other part of the room).
johnmulu answered the question on February 6, 2017 at 09:19
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Date posted: February 6, 2017. Answers (1)
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Date posted: February 6, 2017. Answers (1)
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Date posted: February 6, 2017. Answers (1)