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Nd d'ionisations


happybee
Go to solution Solved by Neïla,

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Salut salut !! On a eu un qcm en td et je n'arrive pas a retrouver le bon résultats...

Pour la C je calcule le nb d'ionisation ( en mev), j'ai donc fait 0.760/32= 0.02375

Et la C est vraie ...

Je dois faire une erreur toute bête mais laquelle ? ?

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Salut :))

 

Il faut faire la conversion de keV en eV ! 760 keV cest 760 000 eV. L'énergie dionisation de l'eau cest 32 eV du coup tu devrais faire 760 000 / 32 et tu trouves bien 23 750 ionisations 

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