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AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
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14 apr 1772 anni - Antoine Lavoisier discovered the Law of conservation of Matter by turning HgO into Hg + O (1772)

Aggiunto al nastro di tempo:

Data:

14 apr 1772 anni
Adesso
~ 252 years ago