September 2018 1 129 Report
AYUDA POR FAVOR
El silicio tiene tres isotopos: 28Si con 27,97693 una (92,21%), el 29 Si con 28,97659 uma (4,7%), el 30Si con 29,97376 uma (3,09%). Calcular la masa atomica promedio o peso atomico expresado en gramos.
Opciones:
A 1,23 x 10-23 g. B 4,67x 10- 23 g. C 7,65x10-23 g D 765x 10-3 g

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