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Which reaction intermediate is formed when 4-methylcyclohexene reacts with Br2 dissolved in CCl4?
This leaves the aspartic acid amine group and the side chain carboxylic acid functional group of aspartic acid. Therefore aspartame will have an isoelectric point at a pH between the pKa values of these functional groups
What are the three major buffer systems of the body and what are the chemical equations
A 64 g piece of ice at 0 degrees celsius is added to a sample of water at 9 degrees celsius. all of the ice melts and the temperature of the water decreases to 0 degrees celsius. How many grams of water were in the sample?
Which one of the following is a redox reaction?
If a reaction mixture initially contains 486 of and 261 of , what is the mole fraction of when equilibrium is reached.
Calculate the superhelical density of a 5000 bp plasmid DNA containing 25 positive supercoils (of B-form DNA).
If 545 mL of oxygen gas is collected at 21ºC and 754 mm Hg, what is its volume at STP?
A titration is performed in which 50.0 mL of 0.0463 M acetic acid (Ka = 1.8*10^-5) is titrated with 0.1000 M NaOH. Calculate the pH at the beginning of the titration
What molar ratio of benzoate ion to benzoic acid would be required to prepare a buffer with a pH of 5.20? [Ka(C6H5COOH) = 6.5 × 10-5]
By definition, which of the following can be broken down into simpler substances?
Calculate the value of w (work) for the following system if 29.0 g of NaN3 reacts completely at 1.00 atm and 22 °C.
Write a reaction for the formation of a peptide bond between alanine and serine. React the amino group of alanine with carboxyl group of serine. Remember that there are 2 products in this reaction.
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