Au/Ra Au/Ra Jamie Lou Stenzel (born 15 May 2002), known by her stage name as Au/Ra, is a pop singer-songwriter, who collaborated with CamelPhat in the 2018 single "Panic Room", and was featured in Norwegian DJ Alan Walker's number-one single "Darkside" in the same year. Au/Ra was born in Ibiza, but was since raised in St. John's, Antigua by a musical family—her father being the German producer Torsten Stenzel. Her stage name Au/Ra consists of two elements from the periodic table: Au stands for gold, a transition metal with the atomic number 79, while Ra stands for radium, an alkaline earth
Chemical process exact in the sense that one can always tell definitively what is a chemical process and what is not; they are practical definitions. There is also significant overlap in these two definition variations. Because of the inexactness of the definition, chemists and other scientists use the term "chemical process" only in a general sense or in the engineering sense. However, in the "process (engineering)" sense, the term "chemical process" is used extensively. The rest of the article will cover the engineering type of chemical process. Although this type of chemical process may sometimes involve only one step, often multiple steps,