FYKOS Year 26 Series 5 Problem 2 — molecules · FYKOS 26 #26.5.2
Physics · thermodynamics
Problem
Imagine evaporating a body of liquid with surface area S. Assume that during this process all the liquid molecules are separated and tLat each molecule can be considered a small particle with a definite surface area. Obviously, the total surface area of all these molecules is much greater than the surface area of the original body. Given that the latent heat of vaporization of water is L=2.1⋅106J⋅kg−1 and that its surface tension is α=7.2⋅10−2N⋅m−1, estimate the size of water molecules.