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.
Best Answer: NH4 is not a stable chemical on its own. It is a cation and it is written as NH4+ and needs a negatively-charged counter ion. The ion is called Ammonium. Ammonia is NH3 Ammonium hydroxide is NH4OH but dissociates in water as NH4+ and OH-Ammonium bromide is NH4Br.