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Can you calculate the pI (equivalence point) for the following peptide?
Phe-Lys-Glu-Asp-Lys-Ser-Ala (Note: there is only one alpha-carboxyl at the C terminus and one alpha-amino group at the N terminus and don't forget to take into account the ionizable side chain groups!)
The company you work for is looking at acquiring a new database system. The old system is over ten years old and needs to either be archived or updated. Justification of the cost of change has been a hot topic of conversation amongst the Board of Dir..
Use the Henderson and Hasselbalch equation to calculate the pH of a buffer solution that is 0.45 M in NH4Cl and 0.15 M in NH3
This reaction calls for the use of 2.20 grams of acetanilde and 6.5ml of Chlorosulfonic acid and is later poured into 30ml of ice water. Suppose that only 1.6 grams of acetanilide is available. Calculate how much of the other reagents should be us..
Given the following heat capacities, (assume they are constant over the temperature range in consideration here), calcrulate enthalpy for the reaction 2NO + O2 ->2NO2 at 398k.
In a laboratory synthesis , a student begins with 5.00ml of acetic anhydride (density = 1.08 g / mL) and 2.08 of salicylic acid. Once the reaction is complete, the student collects 2.01 g of aspirin . Determine the limiting reactant , theoretical ..
A gas at 39°C occupies a volume of 1.67 L. At what Celsius temperature will the volume increase to 2.12 L?
The epidemiology of the spread of disease through bodily fluids can easily be demonstrated using small cups of water given to several people, one of whose contains the base sodium hydroxide (NaOH) which appears no different than water itself. To simu..
The Ksp for AgBr is 4.1 X 10-13. Will a precipitate form if 25 ml of 3.45 X 10-8 M AgNO3 solution is mixed with 25 ml of 4.65 X 10-5 M NaBr solution
In an equilibrium mixture the partial pressures of SO 2 and O 2 are 0.125atm and 0.460atm , respectively. What is the equilibrium partial pressure of SO 3 in the mixture?
What is the final state of the system when the piston has stopped and there is a balance of forces across the piston? Do not neglect the fact that during motion there may be some friction between moving parts. Consider cases in which the piston is..
Explain how many electrons are transferred in the reaction of hydrogen peroxide with iron (II) ion in acidic solution to form iron (III) ion and water
Balance the equation for the following reaction in a basic solution. Give balanced equations for both half-reactions and balanced equation for the overall reaction.
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