Director of the Marine Corps Staff. Headquarters Marine Corps. The Director of the Marine Corps Staff (DMCS) is the principal assistant and advisor to the Commandant and Assistant Commandant, and effectively and efficiently coordinates HQMC staff processes and actions.
Fe2(CO3)3 Carbonate has an oxidation number of -2, iron (III) has an oxidation state of +3. Iron Iii Carbonate. Fe2(CO3)3. Fe2(CO3)3 is correct. Fe(CO3)3. ferrous carbonate (â²ferÂ·És â²kÃ¤rÂ·bÉâ²nÄt) (inorganic chemistry) FeCO3 Green rhombohedral crystals that are soluble in carbonated water and decompose when heated; used in medicine.
  The formula for calcium carbonate, CaCO3, indicates that one molecule consists of a calcium atom, a carbon atom, and three oxygen atoms.o that would require making an anion out of carbon and oxygen. The only polyatomic anion that you can get from carbon and oxygen is carbonate, CO32-. So the calcium carbon oxygen that you might be referring to is calcium carbonate, CaCO3.