temperature 88 C, pressure 101325 Pa and humidity 40%. water vapor pressure in the equation: A= 22.98, B = 145.33 C= 456.44

i) how much water is then in the air per dry air? Calculate the amount of water and give the answer in grades of H2O / kg of air

ii) the weather cooled and you assume that otherwise the conditions would remain the same i.e. the amount of water in the air would remain the same. You noticed the first drop of dew. What was the temperature then

iii) How did the enthalpy change between i) and ii)?