"SDN:P07::CF12N495" . . . . "SDN:P07::CF12N495" . . "2009-07-06 15:41:29.0" . . "false" . . . . "" . . "accepted"@en . . "2009-07-06 15:41:29.0" . "SDN:P07::CF12N495" . "Mole concentration means number of moles per unit volume, also called \"molarity\", and is used in the construction mole_concentration_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 for nitrous oxide is N2O."@en . "1" . "1" . "mole_concentration_of_nitrous_oxide_in_air"@en .