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.
Most metal carbides like sodium carbide, Na2C2 and calcium carbide, CaC2 take this form. The substances do not dissociate to form ions in aqueous solution. Instead carbides of this form (called acetylides) decompose in water to make acetylene.