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A sample contains a mixture of two dyes, A and B. The molar absorptivity coefficients for dye A are 4,875 at 628nm and 2,518 at 684 and for dye B are 1,578 at 628nm and 11,543 at 684nm. In an unknown mixture of the two dyes, the absorbance at 628nm is 0.7619 and the absorbance at 684nm is 0.6917. What are the concentrations of the two dyes?
use the henderson-hasselbalch equation to perform the givennbsp calculations compute the volume of the 0.500 m acetic
For a particular redox reaction MnO2 is oxidized to MnO4- and Ag is reduced to Ag. Complete and balance the equation for this reaction in basic solution
Some investigators modified the Cys 278 with iodoacetamide and found that the enzyme activity was abolished as a result. They concluded that the Cys 278 residue was absolutely essential for enzymatic activity. But other investigators modified the ..
22.05 mL of a sodium hydroxide solution is needed to react completely with 0.5210 g of KHP (molar mass+204.22) What is the concentration of the sodium hydroxide solution
Calculate the equilibrium constant for the reduction of bismuth from the Bi(III) tetrachloro ion to the elemental metal.
Calculate the change in entropy (deltaS) when one mole of diamond is heated from a temperature of 0 K to 400 K at a constant pressure of 1 bar
When an ion-selective electrode for X was immersed in 0.0490 M XCl, the measured potential was 0.0470 V. What is the concentration of X when the potential is 0.0620 V?
what compounds would you use and how would testing these two compounds contribute in your knowledge of the above mentioned subjects
A and B are two species which react in the presence of an acid catalyst. Would you expect the catalyst to appear in the rate law
Draw the structure of the compound you would expect from E2 reaction of 2-chloro-3methylhexane with NaOH.
Cs in the metal with a bcc structure is 272 pm, calculate the expected atomic radius of the Cs atom with a coordination number of 12.
Having trouble with a couple of study guide questions for Chemistry. Hoping someone can assist: PART 1: Calculate the pH of a buffer solution that is 0.250 M in HCN
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