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.
Abstract. The zinc and ammonia values in solutions containing zinc chloride or zinc monoammine chloride and ammonium chloride can be recovered by adding ammonia to a pH of about 5.5 to about 8.5 and separating the precipitated zinc diammine chloride from the residual aqueous solution of ammonium chloride.