Into a beaker of ultrapure water, 20 mL of hexane is added. A high-speed stirrer thencauses the hexane to be distributed into a dispersion of droplets, each of radius 1

um.If the water/hexane interfacial tension is 50.2 mN m-', how much work is done indispersing the oil? What is the pressure difference between the inside and outside of each droplet?

Fig: 1

Fig: 2