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Assuming that an enzyme uses a mechanism similar to that of chymotrypsin, determine which residue of the catalytic triad (Asp, His, Ser) corresponds to pKa of 6.25 and 8.75.
The electrolysis of molten A12O3 at 980 ºC is used to produce metallic aluminum. A current of 520 A is used in the electrolysis cell. What is the rate of formation of aluminum
carbon disulfide can b made by the reaction of carbon dioxide and sulfur trioxide 2so3(g) + Co2(g) + heat >
The pH of a certain solution is 3.0. How many H+(aq) ions are there in 1.0 L of the solution
How many grams of cobalt(II) chloride are required to react completely with 60.0 mL of 0.200 M KOH solution?
It is produced natrually from degradation of organic matter, and also anthropogenically from fuel combustion.) The acid dissociation constant, Ka for formic acid is 10-3.7. Assume T=4*C and I=0.
How much limestone must be decomposed by heating to produce 150.0 grams of lime, CaO?assuming that the limestone contains 85.0% pure CaCO3.
A buffer solution is prepared by placing 5.86 grams of sodium nitrite and 32.6 mL of a 4.90 M nitrous acid solution into a 500.0 mL volumetric flask and diluting to the calibration mark
The aqueous electrolytic solution (d= 1.230 g/cm^3) in a typical automotive battery contains approximately 368 g of hydrogen sulfate (H2SO4, sulfuric acid, MM= 98.07948 g/mol) per liter. Calculate the following concentrations
How many grams of Cl2 can be prepared from the reaction of 16 g of MnO2 and 30 g of HCl according to MnO2 + 4 HCl = MnCl2 + Cl2 + 2H2o
If more than one alkene is possible, predict which one will be formed in the largest amount: a. 2-methyl-2-butanol b. 1-methylcyclohexanol
depending on temperature, RbCl can exist in either the rock-salt or cesium-chloride structure. What is the coordination number of the anion and cation in each of these structures?
Assuming the density of a 5% acetic acid solution is 1.0 g/ml, determine the volume of the acetic acid solution necessary to neutralize 25.0 ml of .10M NaOH. Also record this calculation on your report sheet.
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