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demi vie


surfy
Go to solution Solved by ADNr,

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  • Solution

Demi vie = durée de vie à laquelle il reste 50% de l’élément 

Ici tu vois qu'à 8h y a bien moins que la moitié, donc c'est à dire que la demi vie a était atteinte bien avant. 

Au pire tu divises 150 par 2, tu reportes au niveau de l'abscisse et tu vois que c'est en dessous de 8h. 

 

En esperant t'avoir aidé.

 

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