"Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y. The chemical formula of water vapor is H2O."@en . . "2008-04-15 14:00:00.0" . . "1" . . "false" . . "SDN:P07::CFV8N48" . "accepted"@en . "mole_fraction_of_water_vapor_in_air"@en . . . . . "2008-04-15 14:00:00.0" . "SDN:P07::CFV8N48" . "1" . "" . "SDN:P07::CFV8N48" . .