The molar absorption coefficient of a substance dissolved in cyclohexane is $1710\,\mathrm{L\,mol^{-1}\,cm^{-1}}$ at 500 nm. The reduction in intensity of light of the same wavelength that passes through a cell of 1 mm path length containing a 2 $\mathrm{mmol\,L^{-1}}$ solution (rounded off to one decimal place) is ____%.
Answer
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