The vapour pressure over the curved surface of a liquid may be calculated using the Kelvin equation. The vapour pressure of bulk water at 293 K is 2.30 kPa, its density is 0.9982 g cm-3 and the surface tension is 7.275 x 10-2 N m-1 . Calculate (i) the molar volume of water at 293 K, given that the molar mass of water is 18.02 g mol-1 . (ii) the vapour pressure of a spherical droplet of water of radius 35 nm at 293K.