A website that analyzes and reviews K-12 schools and colleges in the U.S., Niche.com, collected data to find which 25 high schools throughout the entire country produce the highest SAT and ACT scores. The information is based on self-reported scores from 75,834 test-takers at 909 schools from 2012-2014. In order to be considered in the findings, a school had to have at least 100 students submit their scores. Here are the 10 high schools with the highest national standardized test scores.
THE AMMONIA MANUFACTURING PROCESS Ammonia is produced in a process known as the Haber process, in which nitrogen and hydrogen react in the presence of an iron catalyst to form ammonia. The hydrogen is formed by reacting natural gas and steam at high temperatures and the nitrogen is supplied from the air 1. 2 + CO 2 Air is mixed in with the gas stream to give a hydrogen:nitrogen ratio of 3:1. Water, carbon monoxide and carbon dioxide (all of which poison the iron catalyst used in the ammonia synthesis) are removed.
Uses of ammonia. The major use of ammonia is as a fertilizer. It is most commonly applied directly to the soil from tanks containing the liquefied gas. The ammonia can be applied directly or in the form of ammonium salts, such as ammonium nitrate, NH4NO3, ammonium sulfate, (NH4)2SO4, and various ammonium phosphates. Urea, (H2N)2C=O, is also used as a source of nitrogen for fertilizer. Ammonia is also used in the manufacture of commercial explosives (e.g., trinitrotoluene [TNT], nitroglycerin, and nitrocellulose). In the textile industry, ammonia is used in the manufacture of synthetic fibres, such as nylon and rayon.