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Explain how the Pka hisdidine 57 is important to its role in mechanism of chymotrypsin action?
The first step of the fischer esterification involves protonation of the oxygen of the carboxylic acid by the acid catalyst:
When photons with a wavelength of 310. nm strike a magnesium plate, the maximum velocity of the ejected electrons is 3.45 × 105 m/s.
2 NO(g) + O2(g) 2 NO2(g) In one experiment 0.633 mole of NO is mixed with 0.354 mole of O2. Calculate also the number of moles of NO2 produced.
At 4.00 rm L, an expandable vessel contains 0.864 mol of oxygen gas. How many liters of oxygen gas must be added at constant temperature and pressure if you need a total of 1.96 mol of oxygen gas in the vessel.
Determine the pH of a Na_2HPO_4 solution in which the formal concentration of NaHPO_4 is F= 0.00183 M
Calculate the pH during the titration of 34.5 mL of 0.507 M triethylamine, (C2H5)3N with 0.148 M HCl after 13.0 mL of the acid have been added. Kb of triethylamine = 5.2 x 10-4.
How many milliliters of 0.105 M HCl are needed to titrate each of the following solutions to the equivalence point:-- 45.0 mL of 0.0950 M NaOH
what is the maximum [ATP]/[ADP][Pi] ratio compatible with ATP synthesis assuming that the number of protons trans-located per ATP formed is 2, the temperature is 25C and the change of pH is 0.75?
Determine the pH of a solution prepared by adding 0.0500 mole of solid ammonium chloride to 100 mL of a 0.150-molar solution of ammonia.
Prepare 1.00L of a pH~12 buffer with a total phosphate concentration of 0.050 M.You have at your disposal the following compounds
when 7.00 moles of gas A and 3.00 moles of gas B are combined, the total pressure exerted by the gas mixture is 1.0 atm. What is the partial pressure exerted by gas a in this mixture
Identify the acid and base on the left side of following equations and identify their conjugate species on the right side. (Type your answer using the format (NH4)2CO3 for (NH4)2CO3, [NH4]+ for NH4+, and [Ni(CN)4]2- for Ni(CN)42-.)
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