Question: ( d ) A 3 . 0 c m 3 unknown sample of quinine yielded a fluorescence of 1 1 0 . Following addition of

(d) A 3.0cm3 unknown sample of quinine yielded a fluorescence of 110. Following addition of 0.5cm3 of 5ppm quinine, the fluorescence was found to be 120. Calculate the concentration of the unknown quinine solution.
(d) A 3.0cm3 unknown sample of quinine yielded a fluorescence of

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