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Draw the most probable structure of the tripeptide Ser-Lys-Leu at pH =2, pH = 6 and pH =12.b) , estimate the pI of the tripeptide (use all pK's needed from the pK's table
A solution was prepared by dissolving 0.450 g MgSO4 (FW=120.363g/mol) in 0.500L of water. A 50.0 mL aliquot of this solution consumed 37.60 mL of EDTA solution in a titration. How many milligrams of CaCO3 (FW=100.089g/mol) will react with 1.00 mL ..
How many molecules of sucrose (table sugar), C12H22O11, dissolved in 450.0 g of water are needed to make a 1.30 m solution?
What is the stereochemical relationship of the products formed by reacting racemic lactic acid with (S)-1-phenylethylamine?
Using two different methods, determine delta G degree at 25 degrees for the formation of POCl3 from its constituent elements
From the subsequent partial valence-level orbital diagrams, State the condensed electron configurations and the respective group numbers. (a) Electron configuration
The density of helium gas at 273K and 1.00 atm is 1.76E-4 g/mL. What is the volume (in L) of a balloon containing 9.24 g of helium under the same conditions?
Which of the following sets of quantum numbers are not allowed in the hydrogen atom. for the sets incorrect, state what is wrong with each set.
what is the percent yield of a reaction in which 248 g phosphorus trichloride reacts with excess water to form 126 g
Determine the value of the equilibrium constant, K_goal, for the reaction N2(g) + O2(g) + H2(g) 1/2N2H4(g) + NO2(g) ,K goal=? by making use of the following information
140 mL of a .175 M aqueous solution of NH3 is titrated with a .106 M solution of HCl. (NH4+ Ka=5.56x10^-10)
The maximum pressure that can be developed for a certain fluid power cylinder is 15.0 MPa. Compute the required diameter for the piston if the cylinder must exert a force of 30 kN.
are the methyl groups enantiotopic or diastereotopic in the ketone? how about the
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