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Adrien199928
@Adrien199928
April 2019
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Un atome de brome, de symbole Br posséde 80 nucléons. La charge de son noyau est
Q= 5.6 * 10⁻¹⁸ C.
Données : e= 1.6 * 10⁻¹⁹ C et m(neutron) m (proton) = 1.67 * 10⁻¹⁸ C.
Calculer la masse approchées de l'atome de Brome. Expliquer.
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nathalienouts
Q = Zxe
Z = Q/e
Z = 5,6x10⁻¹⁸/1,6x10⁻¹⁹
Z = 35
la masse de l'atome est concentrée dans son noyau
m atome = m noyau = Axm(nucléon)
m atome = m noyau = 80x1,67x10⁻²⁷ = 1,34x10⁻²⁵ kg
3 votes
Thanks 2
adrien199928
Merci beaucoup pour votre explication, grâce à vous j'ai enfin compris
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Z = Q/e
Z = 5,6x10⁻¹⁸/1,6x10⁻¹⁹
Z = 35
la masse de l'atome est concentrée dans son noyau
m atome = m noyau = Axm(nucléon)
m atome = m noyau = 80x1,67x10⁻²⁷ = 1,34x10⁻²⁵ kg