(i) According to the Beer-Lambert law, what is the absorbance of a mixture of 2.00 mM substance X and 1.50 mM substance Y at a wavelength of 260 nm, given that ₂₆₀ for X is 4.00 x 10⁴ L/(mol x cm) and ₂₆₀ for Y is 3.7 x 104 L/(mol x cm)? The cuvette width is 1.00 cm.

(ii) What percentage of the incident 260 nm EM radiation does the sample absorb?