Her trip also included Ellis Island, which was an immigrant inspection station from the late 1800s to the mid 1950s, according to the NPS. The award is named after Ellis Island in New York harbor, which for many decades was the grants landing by boat in New York.
Nitrobenzene is prepared by nitration of benzene with a mixture of concentrated sulfuric acid, water, and nitric acid.This mixture is sometimes called mixed acid..The production of nitrobenzene is one of the most dangerous processes conducted in the chemical industry because of the exothermicity of the reaction (Î´ H = â117 kJ/mol). World capacity for nitrobenzene in 1985 was about 1.7Ã10 6 tonnes.his mixture is sometimes called mixed acid.. The production of nitrobenzene is one of the most dangerous processes conducted in the chemical industry because of the exothermicity of the reaction (Î´ H = â117 kJ/mol). World capacity for nitrobenzene in 1985 was about 1.7Ã10 6 tonnes.
The stomach contains hydrochloric acid, which has a pH of generally 1-3. These optimal pH levels must be present in order for pepsin (a protein-digesting enzyme) to function. If the pH is not acidic, pepsin will only be present in its inactive form, pepsinogen, and protein digestion will effectively occur.Uhh..he pH of your stomach is very acidic it ranges between 1.5-3pH, it is maintained by hydrochloric acid (HCL) and gastrin. A specific enzyme, pepsin, is activated and works bes â¦ t on digesting proteins in the acidic environment. 4 people found this useful.