mole_concentration_of_dissolved_molecular_carbon_dioxide_in_sea_water mol m-3 [MLM3] Mole concentration of dissolved carbon dioxide, CO2(aq) (in carbonate chemistry usually including carbonic acid, H2CO3, written CO2*), one of the species of dissolved inorganic carbon. "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 or biological group denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen".