Gal tworzy dwa trwałe izotopy. Izotop X zawiera w jądrze 38 neutronów, Y- 40. Podaj % udział masy izotopu X.
X-38
Y-40
masa XY=38+40=78
X%=38/78*100%= 48,71%
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X-38
Y-40
masa XY=38+40=78
X%=38/78*100%= 48,71%