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Originally posted by Slap Nuts
Howard will tell you that sheetrock releases compounds of S when burned, however, this can hardly account for the direct sulfidation of these samples.
The spontaneous intermingling of the particles of two or more substances as a result of random thermal motion.
diffusion (dĭ-fy'zhən) Pronunciation Key
The movement of atoms or molecules from an area of higher concentration to an area of lower concentration. Atoms and small molecules can move across a cell membrane by diffusion.