Chemistry, 16.10.2020 23:01, catdog5225
In 1807 the English chemist Humphry Davy passed an electric current through molten potassium hydroxide and isolated a bright, shiny reactive substance. He claimed the discovery of a new element, which he named potassium. In those days, before the advent of modern instruments, what was the basis on which one could claim that a substance was an element?
Answers: 3
Chemistry, 22.06.2019 12:00, winterblanco
What is the lowest number energy level where a d sublevel is found
Answers: 1
In 1807 the English chemist Humphry Davy passed an electric current through molten potassium hydroxi...
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