. "Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The chemical formula of hydrogen sulfide is H2S."@en . "false" . "SDN:P07::CADJBCCG" . . "2012-04-27 15:14:48.0" . . "1" . . "" . "1" . "mole_fraction_of_hydrogen_sulfide_in_air"@en . "accepted"@en . "SDN:P07::CADJBCCG" . "SDN:P07::CADJBCCG" . "2012-04-27 15:14:48.0" . . .