Calculate the surface-to-volume ratio of a sphere of radius r. Then calculate the total drop surface area of 2.80337 mL (= 2.80337 cm3) of the solution if it were sprayed as drops of radius (i) 0.50 nm and (ii) 1 mm

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Properties of Fluids

The term fluid represents a type of substance that can easily change its shape under any external pressure/force and can flow. Fluids can acquire any shape in which it is stored and can resist normal stresses but cannot resist shear stress in rest condition. Whenever external shear stress is applied to fluids, it starts to flow. The fluids may be liquid or gas. Example- water, air, etc.