Question

In 1774 ______ showed that part of air was the gas oxygen .​

Answer 1

Answer:

Joseph Priestley

Joseph Priestley (1733-1804) — Unitarian minister, teacher, author, and natural philosopher — was the Earl of Shelburne's librarian and tutor to his sons. In this room, then a working laboratory, Priestley pursued his investigations of gases. On 1 August 1774 he discovered oxygen.