79. A direct monodisperse emulsion was obtained by dispersing oil in water in the presence of sodium n-dodecylbenzene sulfonate (C12H25C6H4SO3Na). The diameter of an oil droplet is 10-7 m. Calculate the maximum number of surfactant molecules that can be located on the surface of the droplet if the area occupied by one molecule is 33*10-20 m2.

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