Nitish Asked a Question
December 29, 2020 5:52 pmpts 30 pts
1 In a rock sample, the values of ( 87 Sr/ 86 Sr) present and (87 Rb/ 86 Sr) present are 0.7125 and 0.2, respectively. The decay constant of 87 Rb is 1.42,10-11 year1, and time before present (t) is 1000 million years.calculate the half life. 2 Caleulata
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  • Saurabh shukla Best Answer
    Please find solution below...
    • cropped4578492005528717406.jpg
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    Saurabh shukla
    Dear nitish kindly mark my answer if it is correct.