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What is the current density in an electrochemical cell where the cell potential is 1.2 V and the concentration of the reduced species is 0.035 M? Given that the electrode area is 5 cm² and the Faraday constant is 96485 C/mol.

asked Mar 1 in ElectroChemistry by TheScientist (138k points)

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What are the common misconceptions or difficulties that students face when learning the periodic table and chemical elements, and how can these be addressed effectively in order to enhance understanding and retention of the subject matter?

asked Mar 1 in Chemical education by TheScientist (138k points)

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What is the crystal field stabilization energy (CFSE) for a tetrahedral complex with ligand field splitting parameter (Δt) of 900 cm⁻¹ if it contains three unpaired electrons?

asked Mar 1 in Coordination Chemistry by TheScientist (138k points)

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What is the balanced redox equation for the reaction of potassium permanganate with iron(II) sulfate in acidic solution?

asked Mar 1 in Chemical reactions by TheScientist (138k points)

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What is the VSEPR geometry of a molecule that has a central atom with four electron domains and two of them are lone pairs?

asked Feb 28 in Chemical bonding by TheScientist (138k points)

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What is the equilibrium constant for the reaction N2 (g) + 3H2 (g) ↔ 2NH3 (g) at a temperature of 400°C and a pressure of 10 atm?

asked Mar 1 in Chemical equilibrium by TheScientist (138k points)

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What is the VSEPR geometry of a molecule of sulfur hexafluoride (SF6)?

asked Feb 28 in Chemical bonding by TheScientist (138k points)

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What are the common reasons for students to face difficulties in understanding the periodic table and chemical elements, and how can these barriers be overcome through effective study techniques?

asked Mar 1 in Chemical education by TheScientist (138k points)

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Identify the type of intermolecular forces present in acetone (CH3COCH3). Explain why this particular type of intermolecular force is present in acetone.

asked Feb 28 in Chemical bonding by TheScientist (138k points)

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What is the corrosion rate of iron in a 1M HCl solution at 25°C given its weight loss of 2.3 grams over a period of 48 hours? The atomic weight of iron is 55.85 g/mol and its density is 7.87 g/cm³.

asked Mar 1 in ElectroChemistry by TheScientist (138k points)

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What is the corrosion rate of iron in a 0.1M HCl solution at 25°C, given that the corrosion potential of the iron electrode is -0.44V vs. SHE and the Tafel slopes for the anodic and cathodic reactions are 60mV/dec and 120mV/dec, respectively?

asked Mar 1 in ElectroChemistry by TheScientist (138k points)

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What are the chemical compounds present in polluted water that cause harmful effects on aquatic life, and how can we effectively remove or minimize their presence in order to restore and maintain the health of the aquatic ecosystem?

asked Mar 1 in Environmental Chemistry by TheScientist (138k points)

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What is the bandgap energy of a CdSe/ZnS core/shell quantum dot with a radius of 2.5 nm? Use the effective mass approximation to calculate the confinement energies. Also, calculate the Bohr radius and compare it to the size of the quantum dot.

asked Mar 1 in Quantum Chemistry by TheScientist (138k points)

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What factors affect the rate of the reaction between hydrochloric acid and magnesium ribbon, and how can these factors be identified and measured experimentally?

asked Mar 1 in Inorganic Chemistry by TheScientist (138k points)

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What is the enthalpy of vaporization of water if it takes 40 kJ of energy to vaporize 20 g of water at 100°C?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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How does the zeta potential affect the stability of a colloidal system, and how can it be measured experimentally?

asked Feb 28 in Surface Chemistry by TheScientist (138k points)

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What is the formal charge on the nitrogen atom in the molecule NO3⁻?

asked Mar 1 in Chemical bonding by TheScientist (138k points)

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What is the heat released or absorbed when 2 moles of hydrogen gas reacts with 1 mole of oxygen gas to form 2 moles of water vapor at constant volume? The enthalpy change for this reaction is -483.7 kJ/mol.

asked Mar 1 in Physical Chemistry by TheScientist (138k points)

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What is the enthalpy change for the combustion of 1 mole of methane gas (CH4) at standard conditions, given the following information: ΔHf(CH4) = -74.8 kJ/mol, ΔHf(H2O) = -285.8 kJ/mol and ΔHf(CO2) = -393.5 kJ/mol?

asked Mar 1 in Chemical reactions by TheScientist (138k points)

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How can undergraduate chemistry students be exposed to current research in the field, despite limitations in access to research facilities and conferences?

asked Mar 1 in Chemical education by TheScientist (138k points)

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