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19-norandrosterone (C18H28O2, FW = 276.41 g/mol) has a maximum threshold of 4.0 ppb in the urine...

19-norandrosterone (C18H28O2, FW = 276.41 g/mol) has a maximum threshold of 4.0 ppb in the urine of athletes in competitive sports. Calculate the equivalent threshold concentration in molarity (nM)

(a) 430 nM (b) 35 nM (c) 0.25 nM (d) 1600 nM (e) 14 nM

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Answer #1

4 ppb means 4 ug per litre. Let the volume be I L. os Weight of 19 - Noxandrosterone = 4 x 10-69 Formula weight = 276041 g/mohope you will like my answer.

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