Beers law

no- Calculation of ε: Trp: 3 x 5600 = 16800 + Tyr: 6 x 1420= 8520 + Phe 1x197 = 25517 M-1 cm-1 0.57= 22517 c (1) c=.000022338 mol/ml c=( .000022338/2438)/ml = 9.1624 x 10 -6

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Ok thanks- i had no idea concentration was expressed that way. So when talking about protein concentration is one always referring to weight concentration?

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Ok I believe the reason I am confused is because in chemistry when we say "concentration" we usually mean molarity, or moles per unit volume. Here you are talking about concentration in terms of mass per volume, which I thought was density? Is it different for proteins than solutions?

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Hello, I need help understanding the units in this calculation. I am asked to provide the concentration of a protein and I am given the number of Trp and Tyr residues, 3 and 6, so I have calculated the molar absorptivity as 3*5600+6*1420= 25320 M^-1cm^-1. Is this the correct units for this value? Th...

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