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Consider the following reactions, which are two consecutive steps in the TCA cycle.
The two reactions are catalyzed by two independent enzymes, malate + NAD + ↔ oxaloacetate + NADH ΔG10 = +29.7 kJ/mol acetyl-CoA + oxaloacetate ↔ citrate + CoA ΔG10 = -31.5 kJ/mol.
How can the first reaction in the list proceed in the direction of products in this pathway with such a high positive free energy change?
a. this reaction is coupled to ATP hydrolysisb. the second reaction isn the list uses the oxaloacetate keeping its concentration low resulting in a ΔG that is about zero for the first reaction.c. the Q for the first reaction in the list is much larger than its Keq and as such is irreversibled. the answer to this question cannot be determined from the information given
corn farmers typically use 5000 kg of ammonium nitrate per square kilometer of cornfield per year. Ammonium nitrate can be prepared by the following reaction. how much nitric acid would be needed to make the fertilizer needed for 1km2 of cornfield..
Calculate the energy released when a 28.9 gram piece of copper is cooled from its melting point of 1083 degrees C to 25.0 degrees C. The specific heat of copper is .385 J/g degrees C.
What mass of glucose (C6H12O6 ; 180.2 g/mol) is needed to prepare 2.25 L of a solution that has the same osmotic pressure as blood at 37 °C ? (R = 0.08206 L·atm/mol·K)
0.0200 mole of HCl and 0/0200 mole of NaOH react in an open calorimeter and produce 100 J of heat what is the enthalpy of the reaction per mole of HCl
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Enter the compound formula, including state, of the missing substance ( Y ) in the balanced equation below. Do not give the coefficient. Polyatomic ions only need parentheses when there is more than one of the given ion in the molecular formula.
The standard enthalpy of formation of n-octane is -249.95 kJ/mol. Evaluate the amount of heat liberated when 5.04 g of n-octane is burned entirely with excess oxygen to form carbon dioxide and liquid water.
The resulting solution is titrated to a starch endpoint with 34.81 mL of the thiosulfate solution. Calculate the concentration of the thiosulfate solution.
What word is used to describe a pathway that functions in both degradative and biosynthetic reactions
Give the charge and full ground-state electron configuration of the monatomic ion most likely to be formed by the element.
what are the heats of formation of the following species.
classify the reactions below as synthesis, decomposition, single replacement(cationic or anionic) or double replacement
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