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9 janv. 1860 - 3) Scientist met in one of the first international chemistry conferences and decided hydrogen to be given the weight of one and all other elements would be compared to it

Ajouté au bande de temps:

Kashif,Aaron,Felix,Nestor

ByKashif Naseer

25 oct. 2017

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Date:

9 janv. 1860

Maintenaint

~ Il y a 165 ans

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