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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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29 abr 1803 ano - John Dalton proposed that elements consisted of atoms that were identical and had the same mass and that compounds were atoms from different elements combined together.

Adicionado na linha do tempo:

27 set 2017
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0
730

Data:

29 abr 1803 ano
Agora
~ 222 years ago