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.
Example: Suppose that we want to determine the empirical formula of the oxide that formed when we ignited 0.175 g of aluminum (Al) in an open container to produce a compound of Al and O that weighed 0.331 g. The gain in mass is due to the presence of oxygen atoms that combined with the aluminum atoms in the reaction.