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Lorenzo27
@Lorenzo27
December 2019
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3- Determine a massa, em gramas, de:
a) 9.10 24 átomos de He (He=4)
b) 4.10 23 átomos de Ne (Ne=20)
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Silasss12
A) 4g He > 6,02x10^23 átomos
X > 9x10^24
X= 59,8 g de He.
b) 20g Ne > 6,02x10^23
Y> 4x10^23
Y= 13,3 g de Ne.
2 votes
Thanks 1
Lorenzo27
Podia responder a questão 4 tbm ?
Lorenzo27
Já no perfil já
Lorenzo27
Está*
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X > 9x10^24
X= 59,8 g de He.
b) 20g Ne > 6,02x10^23
Y> 4x10^23
Y= 13,3 g de Ne.