{10000 ppm, 3000 ppm}/(39.0983 g/mol)*(Avogadro constant)*(0.0117%)/(1.277E9 yr/ln(2)) in pCi/g{10000 ppm, 3000 ppm}/(39.0983 g/mol)*(Avogadro constant)*(0.0117%)/(1.277E9 yr/ln(2)) in pCi/g

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