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What is the expected yield of benzocaine if 5 grams of p-aminobenzoic acid and 10 mL of ethanol are used in the preparation of benzocaine?

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

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How can we accurately predict the catalytic activity and selectivity of a catalyst using quantum chemical calculations?

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

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What is the activation energy required for the decomposition of hydrogen peroxide to water and oxygen at 25°C, given the rate constant of the reaction is 0.005 s⁻¹?

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

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In determining the molecular geometry and bond angles of a molecule, what is the effect of lone pairs on the bond angles and how can it be predicted using VSEPR theory?

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

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What is the enthalpy change for the reaction: 2H2(g) + O2(g) → 2H2O(l) Given that the standard enthalpy of formation for H2O(l) is -285.8 kJ/mol, and the standard enthalpy of formation for H2(g) and O2(g) are 0 kJ/mol.

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

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What is the density of sodium chloride (NaCl) at a temperature of 25°C and a pressure of 1 atm? (Given: molar mass of NaCl = 58.44 g/mol, crystal structure of NaCl = face-centered cubic, unit cell edge length = 5.64 Å).

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

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What specific chemical modifications can be made to the current chemotherapy drug molecules to increase their efficacy and minimize their side effects in the treatment of cancer patients?

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

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What are the factors that contribute to a limited understanding of chemical bonding and molecular structure, and how can we improve our understanding of these concepts?

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

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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 is the enthalpy change for the isomerization of butene-1 to butene-2, given that the standard enthalpy of formation for butene-1 and butene-2 are -123 kJ/mol and -131 kJ/mol respectively?

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

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What is the VSEPR geometry of a molecule with four bonded atoms and one lone pair of electrons on the central atom?

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

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How does the type and concentration of photosensitizer affect the rate of the photochemical reaction under different light sources and light intensities?

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

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What is the bond energy (in kJ/mol) required to break apart a single molecule of methane (CH4) into its individual atoms (C and 4H)?

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

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What is the enthalpy change for the hydrolysis of 10 grams of sucrose (C12H22O11) in an aqueous solution, assuming complete reaction and a standard state, given that the enthalpy of hydrolysis of sucrose is -564.9 kJ/mol?

asked Mar 1 in ThermoChemistry 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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How does the transportation method (car vs. public transportation) affect the carbon footprint of an individual and how can the impact be minimized?

asked Feb 28 in Environmental Chemistry 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 is the mechanism behind thermal degradation of polyethylene and how can the stability of the polymer be improved?

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

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What is the BET surface area of a sample of carbon adsorbent that adsorbed 7.2 mmol of nitrogen gas at a liquid nitrogen temperature of 77 K, assuming a monolayer coverage of 5.8 x 10^-7 mol/m2 and a nitrogen pressure of 0.98 atm?

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

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How does the temperature affect the orientational order of liquid crystals as predicted by Monte Carlo simulations?

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

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