已知KMnO4的ε為2.2*10^3L/mol*cm,計(jì)算: (1)此波長(zhǎng)下質(zhì)量分?jǐn)?shù)為0.002%的KMnO4溶液在3.0cm吸收池中的透射比? (2)此溶液稀釋1倍后,其透射比是多少?