15 abr 1777 año - Joseph Priestly

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Joseph Priestly is most commonly known for being the first person to scientifically isolate oxygen. He discovered plants produce oxygen by performing an experiment by putting a plant and a candle with a lit flame in a container, the candle flame used up the oxygen and went out. Although, he did not know then that it was an element. However, he also discovered ten new types of gases such as nitric oxide, nitrogen dioxide, hydrogen chloride, and many more.

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