Calculate how many milligrams of the drug are contained in 2.0mL of a 3.0% (w/v) solution ofC17H19N3O3S

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Chemistry

Calculate how many milligrams of the drug are contained in 2.0mLof a 3.0% (w/v) solutionofC₁₇H₁₉N₃O₃S

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4.0 Ratings (400 Votes)

Ans. 3.0 % (w/v) means 3.0 gram of the drug in 100 mL of the solution.

Now,

100.0 mL of the solution has 3.0 gram of drug

Â Â Â Â Â Â Â Or, 1.0 mLÂ Â Â Â Â Â Â Â Â Â Â Â Â -Â Â Â Â Â Â Â Â Â Â -Â Â Â Â (3.0 g / 100.0 mL) of drug

Â Â Â Â Â Â Â Or, 2.0 mL Â Â Â Â Â Â Â Â Â Â Â -Â Â Â Â Â Â Â Â Â Â -Â Â Â Â (3.0 g / 100.0 mL) x 2.0 mL of drugÂ Â Â

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â = 0.06 gram of drug

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â = 6 mgÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â [1 g = 100 mg]

Thus, 2.0 mL of the given solution has 6.0 mg drug.

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