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laurie63
@laurie63
June 2021
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Aidez moi SVP classe seconde :/
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Isotope
Nb protons=24
Nb neutrons=52-24=28
m(atome)=nb(protons)*m(protons)+nb(neutrons)*m(neutrons)=24*1,672*10^(-27)+28*1,675^(-27)=8.702*10^(-26)kg.
Pour l'approx je voudrais pas dire de bêtise
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Nb neutrons=52-24=28
m(atome)=nb(protons)*m(protons)+nb(neutrons)*m(neutrons)=24*1,672*10^(-27)+28*1,675^(-27)=8.702*10^(-26)kg.
Pour l'approx je voudrais pas dire de bêtise