Gold element silver (as electrum) and also naturally alloyed with copper and palladium. Less commonly, it occurs in minerals as gold compounds, often with tellurium (gold tellurides). Gold is resistant to most acids, though it does dissolve in aqua regia, a mixture of nitric acid and hydrochloric acid, which forms a soluble tetrachloroaurate anion. Gold is insoluble in nitric acid, which dissolves silver and base metals, a property that has long been used to refine gold and to confirm the presence of gold in metallic objects, giving rise to the term "acid test". Gold also dissolves in alkaline solutions of cyanide,
Metal Gear Acid 2 "MGS3", a Banana Skin, Possessed Arm, and Emma's Parrot. The game's soundtrack was composed by Akihiro Honda, Hiroshi Tanabe, Nobuko Toda and Shuichi Kobori. It was released along with the "Metal Gear Acid" soundtrack on December 21, 2005, in the two-disc compilation "Metal Gear Acid 1 and 2 Original Soundtrack". "Metal Gear Acid 2" received generally positive reviews from critics and the public. Metal Gear Acid 2 , stylized as METAL GEAR AC!D², is a turn-based collectible card stealth game developed by Kojima Productions and published by Konami for the PlayStation Portable in 2005. A Java ME version for mobile