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Calculate the overpotential of a lead electrode in contact with a solution containing [Pb2+] = 0.001 M when the temperature is 298 K. Given that the standard potential of the Pb2+ / Pb electrode is -0.13 V and the exchange current density is 0.015 A/m2.

asked Feb 3 in ElectroChemistry by CassandraVal (710 points)

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Calculate the overpotential for the reduction reaction of Ag+ to Ag on a silver electrode at 25°C with a current density of 0.5 A/cm2. The standard reduction potential of Ag+ to Ag is 0.799 V vs. the standard hydrogen electrode. The activation energy for this reaction is 65.0 kJ/mol, the transfer coefficient is 0.4 and the reaction order is 1.5.

asked Feb 3 in ElectroChemistry by VilmaBernier (350 points)

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Calculate the overpotential (in millivolts) for the reduction of Cu2+ to Cu on a copper electrode at 25°C, given that the standard reduction potential of Cu2+ to Cu is +0.34 V and the actual voltage is 0.32 V.

asked Feb 3 in ElectroChemistry by VioletLoflin (370 points)

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Calculate the number of electrons transferred when a solution containing 0.25 M Ni(NO3)2 is electrolyzed using a current of 0.50 A for 2.0 hours. The reaction taking place is Ni2+ (aq) + 2e- --> Ni (s).

asked Feb 3 in ElectroChemistry by KathleenWeis (390 points)

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Calculate the number of electrons transferred when 1 mole of magnesium is oxidized to form magnesium ions in an electrochemical cell. The balanced half-reaction is Mg → Mg2+ + 2e-.

asked Feb 3 in ElectroChemistry by Bennett4122 (510 points)

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Calculate the number of electrons transferred in the following reaction: Cu(s) + 2AgNO3(aq) → Cu(NO3)2(aq) + 2Ag(s) Hint: In order to balance the equation, you'll need to add electrons to one side of the reaction.

asked Feb 3 in ElectroChemistry by BenjaminPasc (450 points)

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Calculate the number of electrons transferred in the electrochemical reaction when a solution of silver nitrate is added to a copper electrode and a salt bridge is used to complete the circuit.

asked Feb 3 in ElectroChemistry by ShellyGiron1 (750 points)

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1 answer 45 views

Calculate the number of electrons transferred during the following redox reaction: Cu(s) + 2Ag+ --> Cu2+ + 2Ag(s)

asked Feb 3 in ElectroChemistry by AdaVillagome (850 points)

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Calculate the number of electrons transferred during the following electrochemical reaction: Mg(s) + 2H+(aq) → Mg2+(aq) + H2(g)

asked Feb 3 in ElectroChemistry by EarleFrye28 (630 points)

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1 answer 24 views

Calculate the new equilibrium concentration of a complex ion formed between Cu2+ and NH3(aq) at 25°C, if the initial concentration of Cu2+ is 0.10 M and NH3(aq) is 0.05 M, and the temperature is increased to 35°C. The equilibrium constant (Kc) for this reaction is 1.6×107.

asked Feb 3 in Chemical equilibrium by PoppySidney0 (230 points)

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Calculate the monolayer capacity and specific surface area of a sample of silica gel using BET theory. The sample was found to have a weight of 2.56 g and a total surface area of 260 m²/g. The gas used for adsorption was nitrogen at a temperature of 77 K and a pressure range of 0.01-0.3 P/P₀. The plot of (P/P₀)/(V₀/V) versus P/P₀ generated a straight line with a slope of 4.2×10⁻³.

asked Feb 3 in Surface Chemistry by AprilMcKeown (330 points)

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What is the role of chaperones in protein folding and how do they prevent protein aggregation?

asked Feb 3 in BioChemistry by ZVWShalanda (370 points)

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1 answer 24 views

What is the role of chaperones in protein folding, and how do they assist in the correct folding of proteins?

asked Feb 3 in BioChemistry by BeverlyConfo (350 points)

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1 answer 31 views

How do chaperones assist in protein folding and prevent misfolding? What is the mechanism behind their action in facilitating proper folding?

asked Feb 3 in BioChemistry by MaeWing7071 (410 points)

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What is the role of chaperone proteins in the folding process of newly synthesized proteins and how do they assist in preventing misfolding or aggregation?

asked Feb 3 in BioChemistry by WallyCraney5 (350 points)

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How do chaperone proteins aid in the folding process of newly synthesized polypeptides during protein synthesis?

asked Feb 3 in BioChemistry by CGCTammy4925 (600 points)

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1 answer 51 views

How does the presence of chaperone proteins affect the folding of newly synthesized proteins?

asked Feb 3 in BioChemistry by PZVJovita782 (350 points)

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How do chaperone proteins facilitate proper folding of newly synthesized polypeptide chains during protein synthesis? Include the role of ATP in the folding process in your answer.

asked Feb 3 in BioChemistry by BereniceStre (450 points)

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1 answer 28 views

How do chaperone proteins facilitate the correct folding of newly synthesized proteins in the cell?

asked Feb 3 in BioChemistry by EthanC574154 (370 points)

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1 answer 31 views

How do chaperone proteins assist in the folding of newly synthesized proteins, and what are the consequences of improper protein folding?

asked Feb 3 in BioChemistry by JayneChapin (370 points)

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