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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.
What is the mole fraction of Kr if the partial pressure of Xe and Ar are 1.60 atm and 2.8 atm, respectively?
Neglect the absorption of other waste gas components into the water, and the evaporation of water into the waste gas stream. What is the mole fraction of NH3 in the scrubbed waste gas stream
A chemist burns 160 g of aluminum in oxygen to produce aluminum oxide. She produces 260 g of aluminum oxide. Write a balanced equation and calculate the theoretical yield and percent yield.
suppose 45.0g of water at 85 C is added to 105.0 g of ice at 0 C. The molar heat of fusion of water is 6.01 kJ/mol, and teh specific heat if water is 4.18 J/g C. on this basis of these data (a) what will be the final temperature of the mixture and..
If aluminum is diffused into a thick slice of silicon with no previous aluminum in it at a temperature of 1100?C for 8 hours, what is the depth below the surface at which the concentration is 1016 atoms/cm3
Bismuth oxide reacts with carbon to form bismuth metal: Bi2O3(s) + 3C(s) --> 2Bi(s) + 3CO(g)
a solution was prepared by mixing 50 ml of 0.100 M HCl with enough water to get 250 ml solution . what is the M of the final solution of hydrochloric acid?
Write the nuclear equation for the alpha decay ( production of radioactive decay that may be considered radioactive waste products by the useful production of nuclear energy ) of each nuclide that are products of a nuclear power plant Rn-222, T..
Calculate a lattice energy for (in kilojoules per mole) using the following information.
the temperature of the tire increases to 40.0 ?C). What is the tire pressure in psi assuming no change in volume for the tire? (1 atm = 14.70 psi).
The rate of the reaction doubles when the concentration of CH3Cl is doubled and it quadruples when the concentration of H2O is doubled. What is the unit for K?
Would entropy for a gas be heat Irreverisibly be greater than, less than or equal to a gas heated reversibly? Explain
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