Nitric acid AsO, SbO, and TiO respectively. Some precious metals, such as pure gold and platinum-group metals do not react with nitric acid, though pure gold does react with "aqua regia", a mixture of concentrated nitric acid and hydrochloric acid. However, some less noble metals (Ag, Cu, ...) present in some gold alloys relatively poor in gold such as colored gold can be easily oxidized and dissolved by nitric acid, leading to colour changes of the gold-alloy surface. Nitric acid is used as a cheap means in jewelry shops to quickly spot low-gold alloys (< 14 carats) and to rapidly assess the
The Electric Kool-Aid Acid Test Kesey is conditionally released as he convinces the judge that the next step of his movement is an "Acid Test Graduation", an event in which the Pranksters and other followers will attempt to achieve intersubjectivity without the use of mind-altering drugs. The graduation was not effective enough to clear the charges from Kesey's name. He is given two sentences for two separate offenses. He is designated to a work camp to fulfill his sentence. He moves his wife and children to Oregon and begins serving his time in the forests of California. "The Electric Kool-Aid Acid Test" is remembered as