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In Complex III, electrons are transferred between ubiquinone and cytochrome c. Standard reduction potentials are :ubiquinone +2H + 2e= UbiquinolCytochrome C (Fe3+) + e = Cytochrome C (Fe2+)Write a balanced equation for this reaction and calculate the overall cell potential and free energy change.
Calculate the molar mass of the compound if given that normal freezing point of C6H6 = 5.5 oC , the freezing point depression constant for C 6 H 6 = -5.12 o C/m .
Why must you avoid using your hands in handling the magnesium ribbon and the crucible and cover? 2.Why must objects be cooled to room temperature before taking their weights(masses)
Calculate the concentration of oxygen in water given that the Henry's law constant of oxygen is 4.259 ×104 atm and the partial pressure of oxygen is 0.2 MPa.
Calculate the pH of an aqueous solution prepared to contain 1.3 x 10^-3 M sodium nitrite (NaNO2) if the acid dissociation equilibrium constant, Ka, for nitrous acid (HNO2) is 5.1 x 10^-4.
calculate the mass (g) of the excess reactant after thereaction is complete e. calculate the theoretical yeild (g) of 2,2dibromopropane
An aqueous solution is 1.00% NaCl by mass. Its density is 1.071 g/mL at 25°C. The observed osmotic pressure of this solution is 7.83 atm at 25°C.
Draw on a P-V diagram the following processes. Label accurately each point in the four steps of the cycle using p,V,T for variables e.g. Va. The working substance is a perfect gas. Start from A. Show direction of change using arrow heads.
If you wanted to adapt this procedure to prepare the analogous propoxy compound, how much propyl iodide would you have to use to carry out the reaction on the same scale?
0.1278- sample that is 97.50% As2O3 by mass had been used in the titration, how many milliliters of the 0.02140M KMnO4(aq) would have been required?
When preparing the solutions for Part A, an aqueous solution of diamine and NaOH is made. Why isn't a solution of NaOH and diacid chloride in cyclohexane made
What is the molar mass of an unknown dipotric acid if 65.0 mL of a 0.15 M solution of KOH was needed to reach the second equivilance point in the titration of 0.03 g of the acid.
The following density measurements were made on a bar of iron: 7.58 g/mL, 8.02 g/mL, 7.83 g/mL, 7.80 g/mL, and 7.66 g/mL. The accepted value for iron's density is 7.85 g/ML. Find:
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