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How does the transfer of electrons in a redox reaction affect the energy level and stability of the reactants and products?

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

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What is the formal charge on the sulfur atom in SO4^(2-)?

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

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What is the pH of a 0.1 M solution of HCl (hydrochloric acid)?

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

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What is the formal charge on the oxygen atom in the sulfate ion (SO4²⁻)? Show the calculation of the formal charge.

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

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What are the specific molecular interactions between a particular drug and its target enzyme/protein, and how do these interactions lead to the desired therapeutic effect?

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

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What is the standard enthalpy change for the dissolution of 2.5 moles of sodium chloride in water at 25°C, given that the standard enthalpy of formation of NaCl is -411.1 kJ/mol, and the molar heat capacity of the solution is 4.18 J/g K?

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

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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.

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

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What is the corrosion current density of iron in a 0.1 M hydrochloric acid solution at 25 °C, if the corrosion potential of the metal is -0.44 V vs. the standard hydrogen electrode and the Tafel slope is 120 mV/decade of current density?

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

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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?

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

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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?

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

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How can we increase the exposure to chemistry in everyday life for individuals who are not enrolled in chemistry courses?

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

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What is the formal charge of the nitrogen atom in the molecule NO₂?

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

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What is the mechanism of the Williamson ether synthesis reaction, and how does changing the reaction conditions affect the yield and selectivity of the desired ether product?

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

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What is the formal charge of the nitrogen atom in the molecule HNO3?

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

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What is the monolayer capacity of a sample of activated alumina with a surface area of 200 m2/g, using the BET theory of multilayer adsorption and assuming a specific surface area of 16.2 × 10-20 m2 for nitrogen at 77 K?

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

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How can we modify the synthesis methods for carbon nanotubes to achieve a longer tube length?

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

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How does the variation of pH affect the rate of a photochemical reaction involving hydrogen peroxide and a photosensitizer?

asked Feb 28 in PhotoChemistry by TheScientist (138k points)

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What is the molar mass of magnesium chloride (MgCl2)? Show the calculation method.

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

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What is the formal charge of the carbon atom in the compound CH3COOH? Show your calculations.

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

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What is the activation energy of the following reaction at room temperature?2NO(g) + Cl2(g) → 2NOCl(g)The rate constant of the reaction is 0.00313 L mol^-1 s^-1 at 25°C and increases to 0.05012 L mol^-1 s^-1 at 35°C.

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

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