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.
SMSgts normally operate at the operational level of leadership. Promotion to senior master sergeant is the most difficult enlisted promotion to attain in the Air Force. It is the first enlisted grade to which results of a central promotion board are the primary factor in selection for promotion. Usually, less than ten percent of eligible master sergeants are selected for promotion to senior master sergeant in most years.