Odpowiedzi

2009-12-09T20:10:17+01:00
Mś=(%m₁*A₁+%m₂*A₂)/100%

n₁=6
n₂=7


A₁=(neutrony+protony)
A₁=12
A₂=(neutrony+protony)
A₂=13


12,01=(x*12=(100-x)*13)/100
1201=12x=1300-13x
-99=-x
99=x
m₁=99%
m₂=1%