. "atmosphere_mass_content_of_ethene"@en . . . . "1" . "false" . "\"Content\" indicates a quantity per unit area. The \"atmosphere content\" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_of_atmosphere_layer are used. The chemical formula for ethene is C2H4. Ethene is a member of the group of hydrocarbons known as alkenes. There are standard names for the alkene group as well as for some of the individual species."@en . "SDN:P07::CF12N42" . "SDN:P07::CF12N42" . . . "2009-07-06 15:41:29.0" . "accepted"@en . . "2009-07-06 15:41:29.0" . . "SDN:P07::CF12N42" . "1" . "" .