JasmineFS5181
07.10.2020 •
Chemistry
To calculate the relative age of rocks, geologists use the rate of radioactive decay of isotopes present in their samples. What is the term used for the original amount of
the elemental isotopes being investigated?
A rare earth isotopes
B. Son isotopes
C. daughter isotopes
D. parent isotopes
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Ответ:
I have had this question!!
Hope this helps!!!
Ответ:
0.0208333
Explanation:
300/4=75
75/60=1.25
1.25/60=0.02083333333
the 3's will go on forever
hope this helps