Potassium nitrate (KNO 3), known historically as saltpeter or the mineral ... Thomas included KNO 3 in an article about the action of hydrogen chloride gas on various metal salts. As early as 300 BCE, ...

The first part of the name of the salt produced comes from the metal and the second part comes ... Magnesium plus nitric acid gives us magnesium nitrate. Calcium plus hydrochloric acid gives ...

"Subterranean drainage pipes called tiles transport nitrogen, in the form of nitrate, from fields to streams, impairing downstream surface waters," the scientists wrote. Nitrate runoff from farms ...