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Calculate the standard enthalpy change of reduction for the following reaction: Cu2+(aq) + 2e- -> Cu(s) Given that the standard electrode potential of Cu2+(aq)/Cu(s) is +0.34 V and the standard electrode potential of Ag+(aq)/Ag(s) is +0.80 V.

asked 5 days ago in ThermoChemistry by DeeCarrera9 (430 points)

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How do chaperone proteins assist in the folding of newly synthesized polypeptides?

asked 5 days ago in BioChemistry by DamianPelloe (610 points)

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How does changing the number of unpaired electrons in a molecule affect its magnetic properties, and how can these changes be calculated using quantum chemistry methods?

asked 5 days ago in Quantum Chemistry by ChristinaPae (590 points)

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Calculate the standard enthalpy change for the dissolution reaction of 10.0 g of NaOH(s) in 100.0 g of water at 25°C, given that the heat absorbed by the solution is 9.14 kJ. (Molar mass of NaOH = 40.00 g/mol and specific heat capacity of water = 4.18 J/g·°C)

asked 5 days ago in Chemical thermodynamics by KathiCannan0 (410 points)

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Calculate the standard enthalpy change for the dissolution of 5g of sodium chloride in 100mL of water at 25°C, given that the molar enthalpy of dissolution of NaCl is -3.9 kJ/mol.

asked 5 days ago in Chemical thermodynamics by ElijahGlaspi (510 points)

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Calculate the standard enthalpy change for the dissolution of 10 grams of potassium hydroxide (KOH) in 100 mL of water. Given that the molar enthalpy of dissolution of solid KOH is -57.61 kJ/mol and the density of water is 1 g/mL.

asked 5 days ago in Chemical thermodynamics by HelenaFlemin (430 points)

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Calculate the standard enthalpy change for the sublimation of iodine, given that the sublimation of 1 mole of iodine requires 62.44 kJ of energy and the standard enthalpy of formation of iodine (s) is 0 kJ/mol.

asked 5 days ago in Chemical thermodynamics by Kristian7404 (470 points)

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What is the effect of changing the surface functionalization of gold nanoparticles on their stability and reactivity in water, as predicted by molecular dynamics simulations?

asked 5 days ago in Computational Chemistry by AlexisViera3 (590 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 5 days ago in Surface Chemistry by KeiraMcLerie (450 points)

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How does changing the pH of a solution affect the rate of reaction between hydrochloric acid and sodium thiosulfate?

asked 5 days ago in Chemical kinetics by LeathaBinett (390 points)

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Calculate the standard enthalpy change for the reaction: CuSO4 (aq) + 4NH3 (aq) -> Cu(NH3)4SO4 (aq) given that the standard enthalpy changes of formation for CuSO4 (aq) and NH3 (aq) are -771.5 kJ/mol and -46.19 kJ/mol respectively, and the standard enthalpy change of formation for Cu(NH3)4SO4 (aq) is -2130.4 kJ/mol.

asked 5 days ago in Chemical thermodynamics by GordonChoate (470 points)

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How does changing the concentration of reactants affect the rate of a chemical reaction and the resulting yield of products?

asked 5 days ago in Chemical kinetics by BlytheWedgwo (570 points)

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Calculate the standard enthalpy change for the precipitation reaction of copper(II) sulfate and sodium hydroxide, given the following balanced chemical equation:CuSO4(aq) + 2NaOH(aq) → Cu(OH)2(s) + Na2SO4(aq)Assume the reaction takes place under standard conditions and the necessary species are present in their standard states. Round your answer to two decimal places.

asked 5 days ago in Chemical thermodynamics by VedaHoar6953 (730 points)

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How does changing the size and type of molecule affect the quantum transport properties in nanoscale systems?

asked 5 days ago in Quantum Chemistry by Corazon66R68 (510 points)

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Calculate the standard free energy change for the reaction of HCl with MnO2 to form MnCl2 and H2O at a temperature of 298 K, given that the standard reduction potentials are E°(MnO2/MnCl2)=-0.13 V and E°(H2O/HCl)=1.23 V.

asked 4 days ago in Chemical thermodynamics by LowellBoerne (270 points)

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

asked 5 days ago in BioChemistry by FredComstock (390 points)

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

asked 5 days ago in BioChemistry by KeeshaMcLeay (510 points)

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How does changing the pH of a redox reaction affect the equilibrium position of the reaction, and what factors can influence this effect? Provide an example of a redox reaction and explain how its equilibrium position can be affected by changes in pH.

asked 5 days ago in Chemical equilibrium by ChiquitaHaun (510 points)

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How does changing the concentration of reactants affect the reaction rate and determine the order of the reaction for the given chemical reaction?

asked 5 days ago in Chemical kinetics by LorieBadham9 (530 points)

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Calculate the standard enthalpy change of the following chemical reaction at 298 K given the following bond energies: 2H2(g) + O2(g) --> 2H2O(l) Bond energies: H-H: 432 kJ/mol O=O: 498 kJ/mol O-H: 464 kJ/mol

asked 5 days ago in Physical Chemistry by EthanC574154 (310 points)

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