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You have been given a batch of proteins potentially related to your unknown protein. The proteins are given to you as 10mM solutions in phosphate buffer. You acquire UV-Vis spectra of the solutions to compare to your unknown mixture. A)what is you blank? B)if the extinction coefficient of one of the proteins is 25000M^-1 cm^-1, what will be the absorbance of the solution?
the xylene that received has a density of 0.86 g/ml. Its volume is 2.0 ml, and its concentration is 0.069 g/ml. First of all, need to dilute the solution to a 1:100 ratio (ex: 69000 µg/ml to 690 µg/ml). How do dilute the solution to a 1: 100 ratio..
In the unbalanced reaction, Sn + HNO3 ---> Sn(NO3)2 + H2), 2.100 grams of Sn(NO3)2 was formed. How many grams of NO were formed and how many moles of HNO3 were reacted? (HINT: the coefficient of Sn is 3).
If 2.50 g CuSO4 are dissolved in 8.0 x 10^2 mL of 0.25 M NH3, what are the concentrations of Cu2+, Cu(NH3)4^2+, and NH3 at equilibrium
Given 867 mL of a buffer solution that is 0.532 M methylamine and 0.86 M methylammonium chloride, calculate the pH of this solution after the addition of 1.14 g sodium hydroxide. The Kb of methylamine is 4.4x10-4
Unfortunately, a mixup in the laboratory prevented an immediate analysis, and it was not until 17.0 days later that a measurement on the blood was made.
What would happened if HCl was accidentally used instead of Na2CO3 to extract caffeine from tea bags? Would you be able to fix your mistake. How
The specific heat of fat is 0.45 cal/(g C) and the density of fat is 0.94g/cm^3 . How much energy (in calories) is needed to heat 10cm^3 of fat from room temperature (25 C) to its melting point (35 C).
Compare the rms speeds. Compare the average kinetic energy. -Consider equimolar samples of the same ideal gas at the same temperature, but different volumes. Sample A has a larger volume than Sample B
if a liquid has a density or 1.17 g/cm(3) and a mass of 3750 g calculate the volume?
A sample of gas occupies 250. mL at 37 degrees celsius and 730. torr; what volume would the gas occupy at standard conditions?
Calculate the hydroxide ion concentration in a solution that is 0.068 M morphine C17H19O3N and 0.045 M morphine hydrochloride C17H20O3NCl. Kb of C17H19O3N is 1.6 x 10^-6
Calculate thePH at the equivalence point in titrating 0.100 M solutions of each of the following with 9.0×10^ 2 M NaOH... calculate the ph for HCLO2
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