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20 lugl 1928 anni - Freon was invented
Descrizione:
The compound freon was invented as a better alternatives to the other chemicals being used in fridges like sulfur dioxide and amonia as it was much lower toxicity.
Aggiunto al nastro di tempo:
Science heat project
By
Robert Davidson
24 gen 2018
0
0
274
Data:
20 lugl 1928 anni
Adesso
~ 95 years ago
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