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28 fev 1970 ano - Law of Definite Proportions is discovered

Descrição:

Chemical compounds always contain the same elements in the exact same proportions by mass.

Adicionado na linha do tempo:

Atomic timeline - Noah Turnquist and Trent Oberreit

ByNoah Turnquist

7 nov 2017

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458

Data:

28 fev 1970 ano

Agora

~ 55 years ago

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