3. Determine the density of benzene if the mass of a 35% emulsion of benzene in water is 5 grams, the dispersion of the emulsion is 3 μm-1 at a temperature T = 40 C. The interfacial tension is 28.15 mJ/m2, the total surface energy is 3.5 J. Temperature coefficient db/dT=-0.15 mJ/m2 *K.

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