"110615506"@en-us . "113955976"@en-us . . . "carbonic acid"^^ . . "0"^^ . "a weak acid known only in solution; formed when carbon dioxide combines with water"@en-us . . "0"^^ . "114799084"^^ . . . . . . "carbonic acid"@en-us . . . "14799084-n"^^ .