Water has a surface tension of about 72 erg/cm2. When you add liquid detergent (dish soap) to water, the surface tension drops to 26 erg/cm2. (a) Draw a possible structure and orientation for a detergent molecule at an air/water interface. (b) Estimate the pressure inside soap bubbles of 10 mm, 0.1 mm and 0.001 mm diameter. (c) Calculate the minimum energy (based on creating new surface) to form 1 liter of pure water drops of sizes 10 mm, 0.1 mm and 0.001 mm diameter.