The surface tension and vapour pressure of water at 20 °C is 7.28 × 10^(-2) N/m and 2.33 × 10^3 Pa, respectively. What is the radius of the smallest spherical water droplet which can form without evaporating at 20 °C ?

Q: The surface tension and vapour pressure of water at 20 °C is 7.28 × 10^(-2) N/m and 2.33 × 10^3 Pa, respectively. What is the radius of the smallest spherical water droplet which can form without evaporating at 20 °C ?