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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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23 mar 1742 ano - Carl Wilhelm Scheele (1742) Scheele discovered the elements Oxygen, Chlorine, Molybdenum, and Barium

Adicionado na linha do tempo:

13 out 2017
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Data:

23 mar 1742 ano
Agora
~ 283 years ago