Radioactive dating using potassium argon
If it could, he would know that air was entirely oxygen, carbon dioxide and nitrogen.Cavendish used an electric spark in air to react the oxygen and nitrogen to form nitrogen oxides.In 1892 English physicist John William Strutt (better known as Lord Rayleigh) announced that no matter how it was prepared, oxygen was always 15.882 times denser than hydrogen.
Harmful effects: Argon is considered to be non-toxic. It is colorless, odorless and extremely unreactive.In the periodic table, potassium is one of the alkali metals.All of the alkali metals have a single valence electron in the outer electron shell, which is easily removed to create an ion with a positive charge – a cation, which combines with anions to form salts. Elemental potassium is a soft silvery-white alkali metal that oxidizes rapidly in air and reacts vigorously with water, generating sufficient heat to ignite hydrogen emitted in the reaction and burning with a lilac-colored flame.He knew the nitrogen in air could be reacted with oxygen to form, ultimately, nitrous acid.He aimed to find out if ALL of the air that was not oxygen or carbon dioxide could be converted to nitrous acid.