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A solution of tryptophan has an absorbance of 0.48 (A) at 280 nm, in a 1...

A solution of tryptophan has an absorbance of 0.48 (A) at 280 nm, in a 1 cm length (d) cuvette. Given the absorbance coefficient (ɛ) of tryptophan is 6.4 x 103 L.mol-1.cm-1. What is the concentration (c) of solution?

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