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What is the corrosion potential of iron in a 0.1 M solution of sulfuric acid at 25°C? Use the standard electrode potential values of Fe2+ and Fe3+ and the Nernst equation to calculate the potential value.
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ElectroChemistry
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How can you design a drug that effectively treats Type 2 Diabetes by targeting specific metabolic pathways, while minimizing potential side effects?
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Medicinal Chemistry
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What is the pH of a 0.05 M solution of hydrochloric acid (HCl)?
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Inorganic Chemistry
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How can we reduce the environmental impact of industrial waste disposal techniques used by chemical manufacturing plants in order to ensure the safety of the surrounding ecosystems and communities?
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Environmental Chemistry
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What are the different types of chemical reactions and how can they be identified and balanced using chemical equations?
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Chemical education
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What is the standard enthalpy change for the combustion of 3 moles of propane gas (C3H8) at standard conditions? Express your answer in kJ/mol of propane burned.
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Chemical thermodynamics
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What is the amount of heat energy required to vaporize 50 grams of water at its boiling point of 100°C, given that the enthalpy of vaporization of water is 40.7 kJ/mol?
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ThermoChemistry
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What is the yield of aspirin obtained from the chemical synthesis of aspirin from salicylic acid and acetic anhydride, and how does it vary with different reaction conditions such as temperature and reaction time?
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Chemical synthesis
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How has the understanding of the atom evolved throughout the history of chemistry, and how has this impacted the development of modern atomic theory?
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Chemical education
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What is the amount of heat absorbed in the process of melting 10 grams of ice at 0°C, given that the enthalpy of fusion of ice is 6.01 kJ/mol? Show the calculations and round off to two significant figures.
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Mar 1
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ThermoChemistry
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What is the vibrational frequency and the infrared spectrum of carbon monoxide (CO) molecule using quantum chemistry calculations, and how do these properties relate to the molecule's geometry and electronic structure?
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Quantum Chemistry
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What is the formal charge of the nitrogen atom in the ammonium ion (NH4+)? Show your calculations and explain how you arrived at your answer.
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Inorganic Chemistry
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What is the standard enthalpy change for the vaporization of 50 grams of liquid water at 100°C and 1 atm pressure? Given that the molar enthalpy of vaporization of water is 40.6 kJ/mol.
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Mar 1
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Chemical thermodynamics
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What is the enthalpy change when dissolving 5 grams of NaOH in 100 ml of water at 25°C, given that the molar enthalpy of dissolution of NaOH is -44.5 kJ/mol?
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Mar 1
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ThermoChemistry
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What is the heat of mixing when 20 ml of a 0.1 M HCl solution is added to 50 ml of a 0.2 M NaOH solution at room temperature, assuming complete mixing and a constant pressure?
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Mar 1
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ThermoChemistry
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What is the theoretical yield of aspirin that can be obtained from the synthesis of 5 grams of salicylic acid using 10 mL of acetic anhydride assuming a 100% yield and purity?
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Chemical synthesis
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What is the formal charge of the chlorine atom in the molecule ClO2? Show your calculations.
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Mar 1
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Chemical bonding
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What is the activation energy in Joules for a chemical reaction that has a rate constant of 2.7 x 10^-3 s^-1 and a temperature of 298 K? The activation energy can be calculated using the Arrhenius equation.
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Mar 1
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Chemical reactions
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What is the heat of formation of methane (CH4) given the following bond energy values: C=C (838 kJ/mol), C-H (413 kJ/mol) and H-H (436 kJ/mol)?
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Mar 1
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Chemical bonding
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What is the activation energy of the reaction between hydrochloric acid and zinc, given that the reaction rate constant at 25°C is 3.42 x 10^-3 s^-1 and the temperature coefficient is 1.99?
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Mar 1
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Chemical reactions
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