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A scientist has constructed a secret peptide to carry a message. You know only the composition of the peptide, which is six amino acids long. It contains one serine S, one threonine T, one cysteine C, one arginine R, and two glutamates E. What is th e probability that the sequence SECRET will occur by chance?
Choose the answer that shows a correctly balanced equation.
Formulate a reaction mechanism to show how, with excess acetic anhydride ,2-methyl benzisoxazinone might be formed.(Hint: acetylation of the amino group should occur first). How many moles of acetic anhydride are consumed in this reaction?
hydrogen gas was collected over water in a eudiometer at 26 degrees c when the atmospheric pressure was 726 mm hg. What was the pressure of the hydrogen gas?
what is the molar mass of a gaseous element that Effuses through an opening of a box 1.12 times as fast as argon at the same temperature.
Water is added to 25.0 ml of .716 MKNO3 solution until the volume of the solution is exactly 500 ml. What is the concentration of the final solution?
A solid mixture consists of 35.7 of KNO3 (potassium nitrate) and 6.3g of K2SO4 (potassium sulfate). The mixture is added to 130. of water. If the solution described in the introduction is cooled to 0
Draw the best Lewis structure of CO32-. In this compound, the C atom is attached to three O atoms, and there are no O-O bonds
A sample of a gas in a cylindrical chamber with a movable piston occupied a volume of 2.86 cubic meters when the pressure was 9.85 × 104 Pa and the temperature was 25.8 ºC
Explain why the melting temperature of a double-helical DNA increases when the Na+ concentration increases.
The presence of the carbon-carbon double bond in eugenol can be tested using the bromine water test. write a balance equation for the reaction involved in this test?
Five structural isomers have the formula C6H14. Where needed, draw the structure and give the IUPAC name of all five isomers
Infrared spectroscopy----How would you know if you used too much liquid and what would you do about it. what will damage the salt plates
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