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28 feb 1970 anni - Law of Definite Proportions is discovered

Descrizione:

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

Aggiunto al nastro di tempo:

Atomic timeline - Noah Turnquist and Trent Oberreit

ByNoah Turnquist

7 nov 2017

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Data:

28 feb 1970 anni

Adesso

~ 55 years ago

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