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.
Contract sergeant was classified as the lowest sub-officer rank, the rank below being chief corporal. 1  Student sub-officer, Ã©lÃ¨ve sous-officier (formerly contract sergeant, sergent sous contrat): One chevron, gold or silver. Contract sergeant was a rank used for junior sergeants, either conscripts or reservists.