Oxygen can combine with carbon to form two compounds, carbon monoxide and carbon dioxide. the ratio of the masses of oxygen that combine with a given mass of carbon is 1:2.
Best Answer: colonel is the highest of those listed followed by captain and then lieutenant, those three are all commisioned officers. a sergeant is a non commisioned officer and has different responsibilities. Source(s): Docbrown Â· 1 decade ago.
Army Promotion to E-5 Sergeant. A Sergeant is a Noncommissioned Officer in the United States Army at DoD paygrade E-5. This page describes how the Army determines who is eligible for the promotion list to Sergeant. Soldiers are promoted to the rank of Sergeant from either the rank of Specialist or Corporal, both ranks of the E-4 grade.