Radioactive
Isotope
U-238
Age of
Stable
Product
Mass of
Radioac...
Physics, 29.03.2021 19:00, Jcausey4477
Radioactive
Isotope
U-238
Age of
Stable
Product
Mass of
Radioactive
Isotope
459
Mass of
Stable
Product
3159
Percent
Radioactive
Percent
Stable
Total Mass
# of Half-Lives
Represented
5
360 g
87.50%
Isotope
Half Life (yrs) Rock (yrs)
4.5 bill yrs
49 bill yrs 98 bill yrs
Rb-87
Sr-87
50 g
K-40
Ar-40
6.25%
59
1lg
75g
33 g
C-14
75%
2
K-40
Ca-40
239
469
1.3 billys
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