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28 feb 1970 año - Law of Definite Proportions is discovered
Descripción:
Chemical compounds always contain the same elements in the exact same proportions by mass.
Añadido al timeline:
7 nov 2017
0
0
356
Atomic timeline - Noah Turnquist and Trent Oberreit
fecha:
28 feb 1970 año
Ahora mismo
~ 54 years ago