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If a protein has a molecular weight of 62,000 g/mol and a molar absorbtivity of 98,000 M-1 cm-1 , at a concentration of 1mg/mL the absorbance in a 1 cm cuvet would be:
a. approximately 1.5
b. approximately1.0
c. approximately 0.6
d. approximately 0.3
Palladium crystallizes in a face-centered cubic unit cell. Its density is 12.0 g/cm^3 at 27 degrees C. Calculate the atomic radius of Pd.
Phases are optional. A. 0.450 L of 0.420 M H2SO4 is mixed with 0.400 L of 0.200 M KOH. What concentration of sulfuric acid remains after neutralization?
Assuming that each tank car had a capacity of 33,500 gal, knowing that the density of liquid propane at its boiling point (-44.5°C) is 0.5853 g/cm3, and assuming that the propane vaporized and warmed to 25°C
What metal ions are involved in electron transport, and what is special about them that enable electrons to be shuttled among the various proteins
An emission line from K atoms is found to have two closely spaced components, one at 766.70nm and the other at 770.11nm. Account for this observation, and deduce
A compound A (C22H27NO) is insoluble in acid and base but reacts with concentrated aqueous HCl and heat to give a clear aqueous solution from which, on cooling, benzoic acid precipitates.
For UV light of wavelength 254 nm, calculate the frequency and the amount of energy absorbed by a single molecule when it absorbs a quantum of this light. (Remember ??=c, where c = 3.00 x 108m/s and E = h?, where h = 6.63 x 10-34 J·s) 1nm = 1x10-9..
The fat content in milk can be measured by the extration with hexane. a 50.0g sample of whole milk was mixed with hexane and gently stirred.
Hydrogen and oxygen react under a specific set of conditions to produce water according to the following equation. 2 H2(g) + O2(g) -> 2 H2O(g)
Calculate the change in enthalpy of HCl + NaOH--> NaCl + H2O for this reaction using Hess's Law. Units should be kJ/mol.
If I have 2.4 moles of gas held at a temperature of 97 C and in a container with a volume of 45 liters, what is the pressure of the gas
What is the rate constant of a first-order reaction that takes 9.00 minutes for the reactant concentration to drop to half of its initial value?
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