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
SELF-PRACTICE — the source book printed no answer.
Nothing is invented here, so this question has no answer on record.