A rough & ready method involves memorising three numbers â 3, 5 and 8 â and the fact that 1 km in miles is approximately equal to the first of these numbers divided by the second, or alternatively the second divided by the third. That is: 1 km â 3/5 or 5/8 miles.
Ammonium chloride solutions with ammonia are used as buffer solutions. In paleontology, ammonium chloride vapor is deposited on fossils, where the substance forms a brilliant white, easily removed and fairly harmless and inert layer of tiny crystals.
Although the conversion of ammonia to ammonium creates temporary alkaline conditions in the ammonia retention zone, the process of nitrification (conversion of ammonium to nitrate) is an acid-forming reaction, and the overall effect of AA applications is a reduction in soil pH.