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One of the major problems in peptide synthesis concerns racemization of the amino acids. If all the stereogenic centers at the a carbons of a polypeptide containing 10 different amino acids (excluding glycine) were racemized during the synthesis, how many stereoisomers would be present?
a. 10b. 20c. 100d. 1024e. 2048
An insulated piston is compressing a perfect gas, suddenly the piston stops compressing the gas since there is no heat exchange to external environment, will the piston compress, expand, or stay the same and why?
KHC8H4O4, was prepared by dissolving 0.4877 g of potassium hydrogen phthalate in about 50 mL of water. Titration with a KOH solution required 18.81 mL to reach a phenolphthalein end point. What is the molarity of the KOH solution
What hybrid orbital would be expected for the central atom in each of the following: Draw the molecular structure of these compounds and label Ï? and Ï?bonds.
explain the earodynamics characteristics of margarine firmness and coefficient of friction important in agricultural engineering research and development.
Calculate the equilibrium concentration of each compound if 3.10 moles of COBr2 are placed in a 3.00 liter flask at a certain temperature. Kc = 0.140 for the reaction at this temperature.
silicon has three naturally occurring isotopes. 28si mass 27.976927 29si mass 28.976495 30si mass 29.973770 and 3.10
What is the molarity of the carbonate ion in sodium carbonate, Na2CO3, prepared by dissolving 3.5 g of sodium carbonate in enough water to form 0.800 L of solution?
A scuba diver with a lung capacity of 5.4L inhales a lungful of air at a depth of 47m and a pressure of 5.7 atm. If the diver were to ascend to the surface (where the pressure is 1.0atm ) while holding her breath, to what volume would the air in h..
Why is it important to not dilute an initial sample before it hasbeen loaded
Copper is obtained from ores containing the minerals, azurite,Cu3(CO3)(OH)2, chalcocite, Cu2S, chalcopyrite CuFeS2
Determine the number of significant digits in each number and write out the specific significant digits.
A brick consisting of pure metal measures 4.00 inches x 5.00 inches x 3.00 inches and weighs 7.020 kg. Using density, identify the metal in the brick.
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