Water Vapor Pressure at Different Temperatures (°C) Water K w and pK w at Different Temperatures (°C) C°(H 2 O(l)) = 4184 J∙K −1 ∙kg −1 = 4.184 J∙g -1 ∙°C -1 Standard Water Melting and Boiling Tempera...Water Vapor Pressure at Different Temperatures (°C) Water K w and pK w at Different Temperatures (°C) C°(H 2 O(l)) = 4184 J∙K −1 ∙kg −1 = 4.184 J∙g -1 ∙°C -1 Standard Water Melting and Boiling Temperatures and Enthalpies of the Transitions If we divide 1 by this value, we will obtain the length of the path (in cm) after which the intensity of a light beam passing through water decays by a factor of the base of the natural logarithm e (e = 2.718281828).</figcaption> </figure>
