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The ratio of an enzyme catalyzed reaction rate to the uncatalyzed rate (i.e. kcat/ kuncat) is equal to 10,000. Compute the amount, in kj/mol, by which the activation energy for the reaction is lowered by the enzyme.
Assume the free energy of the reactants is the same in both cases.
The temperature is 300 K and the gas constant R is 8.314 J / (mol K).
Air is 21% oxygen, 78% nitrogen, and 1% other gases. What is the minimum volume of air in liters needed to extract 65 L of oxygen
an iron bar of mass 869 - g cools from 90 oc to 5 oc gt calculate the heat released in kilojoules by the metal.
How many grams of zinc metal will react completely with 8.2 liters of 3.5 M HCl? Zn (s) + 2 HCl (aq) ZnCl2 (aq) + H2 (g)
Generally speaking, as you go across a period in the periodic table, the effective nuclear charge (Zeff) increases because each successive element contains more protons in the nucleus than the previous element and the outer electrons are all in th..
what is the freeenergy change for the equilibrium between hydrogen iodide hydrogen and and iodine at 453deg? i
Problem- For similar light intensity, compact flourescent bulbs use about 25% of the energy of incandesant bulbs. Lets say you replaced a bulb of 75 W with a flourescent bulb and that your utility charges $0.15/kW-hour. How many dollars would you ..
Identify the element oxidized and reduced in the following redox rxn. Also indicated the number of electrons lost/gained by each atom.
heptanol has the formula c7h16o and can be combusted in the presence of oxygen. if 15.0 g of heptanol is combusted in
A quantity of 432 mg of an amino acid with a neutral side chain consumes 7.39 mEq of acid as well as base in the titration range of 0.8 to 12.0. Explain what is the name of the amino acid
Addition of water to an alkyne gives a keto-enol tautomer product. Draw the ketone that is in equilibrium with the given enol.
for the set of elements Li, O, Ne, and Na which element has the largest atomic radius. Explain any deviation from the expected pattern
When a strong base is added to a solution of CuSO4, which is pale blue, a precipitate forms and the solution above the precipitate is colorless. The net chemical equation is Cu(2+)(aq) + 2OH(-)(aq) --> Cu(OH)2(s)
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