US Marine Corps Forces Central Command (MARCENT) US Marine Forces Central Command (MARFORCENT) US Marine Corps Forces Central Command (MARCENT) is designated as the Marine Corps service component for US Central Command (CENTCOM). MARCENT is responsible for all Marine Corps forces in the CENTCOM area of responsibility.
Aluminium carbide, chemical formula Al 4 C 3, is a carbide of aluminium.
Aluminum Chloride has a formula of #AlCl_3#. Aluminum typically is a cation and has an charge of #Al^(+3)#. Chlorine typically is an anion and has a charge #Cl^(-1)#. In order to bond ionically the charges must be equal and opposite. It will take three -1 chloride ions to balance one +3 aluminum ion forming an aluminum chloride molecule of #AlCl_3#.