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1. a. For the following two peptides, draw the chemical structure of both peptides, indicating where the peptide bonds are.
(1a) Pro-Lys-Phe-Asp (ii) His-Tyr-Arg-Trp
1b. Draw a titration curve for both of these peptides. Be sure to label the axes properly, indicate the pKa values, the equivalence points and the buffering regions.
Consider a nitrite (NO2-) analysis for rainwater samples. Gas chromatographic (GC) vs. spectrophometric approaches were compared with the following results as means?
Calculate the standard enthalpy of the reaction, Delta(H) rxn}, for the thermite reaction: 2Al(s) + Fe2O3(s) ----> 2Fe(s) + Al2O3(s) Elements in their standard state have an enthalpy of formation value of zero
Calculate the number of 5.70m NaOH must be added to 666 ml of a buffer that contains .0205m C2H4O2 and .0260m C2H3NaO2 to increase the ph to 5.75.
Aluminum sulphate is used in sand paper, among other uses. How many g of aluminum oxide dihydrate will be needed to produce 500 g of aluminum sulphate by the (unbalanced) reaction below? Al2O3 •2H2O + H2SO4 Al2(SO4)3 + H2O
If an electrode has a potential of â€"0.005 V with respect to a S.C.E., what is the potential with respect to a sliver-silver chloride electrode?
Titration of 80 ml of unknown concentration of H3PO4 requires 126ml of 0.128M KOH. What is the concentration of H3PO4?
if you had 21 moles of oxygen and 8 moles of ethane, what is the most moles of carbon dioxide possible?
How many moles of gas are in a container that is 2.00 L, at 30.0 atm and a temperature of 25.0 C?
gives a straight line with a slope equal to -5100 K. What is the activation energy for the reaction?
One of the steps in the commercial process for converting ammonia to nitric acid involves the conversion of NH3 to NO:
What is the rate constant for the reaction at 85°C?
Suggest a reason why the cyclic intermediate in the formation of methyl-e-4-methoxycinnamte from p-anisaldehyde, might have two important groups in a trans relationship
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