fluoxymesterone 10.0 mg 500.0 mL 100.0 μL 100.0 mL

fluoxymesterone 10.0 mg 500.0 mL 100.0 μL 100.0 mL

 

 

A standard solution is prepared

for the analysis of fluoxymesterone (C20H29FO3), an anabolic steroid.

A stock solution is first prepared by dissolving 10.0 mg of fluoxymesterone

in enough water to give a total volume of 500.0 mL.

A 100.0 µL aliquot (portion) of this solution is diluted

to a final volume of 100.0 mL.

Calculate the concentration of the final solution in terms of molarity.

 

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C20H29FO3의 몰질량 = 336.44 g/mol 이므로,

(10.0/1000 g) / (336.44 g/mol) = 2.97×10^(-5) mol C20H29FO3

( 참고 https://ywpop.tistory.com/7738 )

 

 

 

몰농도 = 용질 mol수 / 용액 L수

( 참고 https://ywpop.tistory.com/3222 )

 

= (2.97×10^(-5) mol) / (500.0/1000 L)

= 5.94×10^(-5) M

 

 

 

MV = M’V’

( 참고 https://ywpop.tistory.com/2859 )

 

(5.94×10^(-5) M) (100.0/1000 mL) = (? M) (100.0 mL)

 

? = (5.94×10^(-5)) (100.0/1000) / (100.0)

= 5.94×10^(-8) M

 

 

 

답: 5.94×10^(-8) M