Finely dispersed drug droplets in water are prepared and their specific area and solubility are measured at 25°C. It is found that the emulsion has a specific area of 4.25×105 cm2/g and the solubility is 11.5% higher than the one of the bulk liquid. Calculate the size and the interfacial tension of the droplets, if the molar volume of the drug is Vmol = 22.3 cm3/mol. Assume that the drug has the density of water (1.0 g/cm3).