21. HgS is soluble only in aqua regia , which can be used to separate it from the rest. 22. It does react with aqua regia , a mixture of nitric and hydrochloric acids, and with selenic acid. 23. The addition of sal ammoniac to nitric acid creates Aqua regia and this acid is able to dissolve gold. 24. It was hypothesized that this was probably nitric acid or aqua regia , both capable of etching soft glass. 25. Aqueous solutions of NOF are powerful solvents for metals, by a mechanism similar to that seen in aqua regia . 26. She strangled the woman and destroyed a part of the victim's body using self-made aqua regia . 27. Think nothing of a jar of aqua regia in an open container by the sink that could get nocked over. 28. :: You might go for a combination of acids; see for example Aqua regia , which will dissolve platinum. 29. Chemists who studied platinum dissolved it in aqua regia ( a mixture of hydrochloric and nitric acids ) to create soluble salts. 30. While local regulations may vary, aqua regia may be disposed of by careful neutralization, before being poured down the sink.
