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feb 28, 1970 - Law of Definite Proportions is discovered

Description:

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

Added to timeline:

Atomic timeline - Noah Turnquist and Trent Oberreit

ByNoah Turnquist

7 Nov 2017

0

0

487

Date:

feb 28, 1970

Now

~ 56 years ago

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