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Assume that you need to prepare 4-methyl-2-pentyne and discover that the only alkynes on hand are acetylene and propyne. You also have available methyl iodide, isopropyl bromide, and 1,1-dichloro-3-methylbutane. Outline an efficient synthesis using any or all of the mentioned reagents to form the 4-methyl-2-pentye.
A change in the primary sequence of a protein will never change how a protein is allosteric regulated. a.) True b.) False Which of the following is NOT a mechanism of enzyme regulation? a.) Feedback inhibition by a product. b.) Addition or removal..
Calculate the amount of heat [kcal] released when 50.0 g of steam at 100 °C hits the skin, condenses, and cools to a body temperature of 37 °C.
If 4.5 of ammonium chloride were dissolved in 200 L of water what would be the ammonium chloride concentration in mg/L
Suppose a sample of solid hydrogen is held under an external pressure of 0.030 atm and heated from 5 to 300 K. What phase change(s), if any, will occur?
what is the value of k using the equation delta Grxn=-RTlnk? (Assume -R is equal to -8.314 and T is 298K)
what is the freezing point(Degrees C) of a solution prepared by dissolving 11.3g of Ca(NO3)2 ( formula weight= 164g/mol) in 115g of water?
Will the concentration of Ni2+ increase or decrease as the cell operatres? c. What is the initial concentration of Ag+ in the cell?
If a 1.22 g piece of gold is hammered into a sheet whose area is 32.4 ft2, what is the average thickness of the sheet? (The density of gold is 19.32 g cm-3.)
The pressure in an engine cylinder increases from 7.6 atm to 13 atm as the gas is compressed from 0.50 L to 0.10 L. What is the expected cylinder temperature if the gas was initially 15°C?
How much energy (heat) is released when 1.52 moles of H2 reacts with 0.68 moles of Cl2 to create HCl(g) if the ΔHrxn = -184.6 kJ.
Calculate the standard potential for this reaction. Normally, X is Fe. Here it is some unknown metal, allowing for somewhat random values for ΔGo.
Calculate the pH of 0.0021 M aminoethanol (pKa = 9.38) in 0.0030 M sodium aminoethanoate (a salt of the conjugate base of aminoethanol).
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