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What is the surface area of a sample of activated carbon with a BET (Brunauer-Emmett-Teller) surface area of 500 m²/g, if 5 g of the sample is used in the experiment?

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

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How does the calculated band gap of a zinc oxide (ZnO) crystal change when the lattice constant is varied using density functional theory calculations?

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

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How to design an efficient system for the production of surfactants that meets the required chemical properties and manufacturing standards while minimizing environmental impact and maintaining cost-effectiveness?

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

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What is the enthalpy change (ΔH) for the combustion of methane gas (CH4) at constant pressure (1 atm) if 5.5 grams of methane is completely burned in a bomb calorimeter and the temperature increases by 14.6°C?

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

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Suppose you are given 500 mL of 0.1 M acetic acid and 0.1 M sodium acetate buffer solution. You add 2 mL of 1 M hydrochloric acid to the buffer solution. Calculate the new pH of the solution and explain how the buffer system resists changes in pH.

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

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What is the standard enthalpy change for the reaction between 50 mL of 1 M sulfuric acid and 40 mL of 1.5 M sodium hydroxide at 25 °C, given that the temperature change observed was 6.5 °C?

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

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What is the standard enthalpy change for the reaction between 50 mL of 0.1 M HCl(aq) and 50 mL of 0.1 M NaOH(aq) at 25°C, given that the resulting solution has a density of 1.05 g/mL and a heat capacity of 4.184 J/goC?

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

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What is the standard free energy change of the following redox reaction at 298 K and 1 bar?2Fe2+(aq) + H2O2(aq) + 2H+(aq) → 2Fe3+(aq) + 2H2O(l)Given the following standard reduction potentials:Fe3+/Fe2+ = +0.771 VH2O2/O2 = +0.695 V

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

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How can we use the principles of medicinal chemistry to design a drug that specifically targets and destroys leukemia cells while minimizing harm to healthy cells in the body?

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

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How can we calculate the thermodynamic properties of a gas (such as internal energy, entropy, and free energy) by using different thermodynamic ensembles and statistical mechanical principles?

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

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What is the standard cell potential for a galvanic cell made up of a silver electrode and a zinc electrode, where the concentration of silver ions is 0.01 M and the concentration of zinc ions is 1.0 M?

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

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How can we use the principles of medicinal chemistry to design drugs that specifically target the influenza virus and prevent its replication, while minimizing side effects and maintaining effectiveness against different strains of the virus over time?

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

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What is the vibrational frequency of CO2 molecule in cm-1 using infrared spectroscopy with a wavelength of 4.24 µm? (The molecular bond length can be assumed to be 116.3 pm)

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

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How can we control the photochromic properties of a material to achieve desired color changes under specific light conditions, and what factors impact the efficiency of these changes?

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

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What is the theoretical yield of AgCl produced when 50 mL of 0.1 M NaCl solution is mixed with 50 mL of 0.1 M AgNO3 solution?

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

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What is the rate of diffusion of oxygen gas at 25°C and 1 atm pressure, if it diffuses through a platinum sheet with a thickness of 0.1 mm and a surface area of 10 cm²? The diffusion coefficient of oxygen in platinum is 2.2 x 10^-5 cm²/s.

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

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How can we design a synthesis method to produce copper nanoparticles with uniform size and shape for use in catalytic applications?

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

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What is the mass of copper deposited on a cathode when a current of 5A is applied for 1 hour in a copper sulfate solution with a concentration of 0.5M? (Molar Mass of Cu: 63.55 g/mol and Faraday's constant: 96,485 C/mol)

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

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What is the calculated magnetic moment of iron(III) oxide (Fe2O3) at room temperature using an experimental molar susceptibility of 5.48 × 10^-6 cm^3/mol?

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

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How can you design a photochemical experiment to distinguish between the enantiomers of a chiral compound and determine their specific photochemical properties?

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

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