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Bonjour,

Je faisais le QCM 25 Session 2 2020-2021 je ne comprends pas pourquoi la question E est juste.

-> E. Le temps au bout duquel il ne restera plus que 10% de la concentration initiale en A, est : t = ln (10) / k .

Je comprend pourquoii mettre ln10?

mercii

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