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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 Gibbs free energy change at 25°C for the reaction: 2NO(g) + O2(g) → 2NO2(g) given that the standard Gibbs free energy of formation of NO, O2, and NO2 are +90.4 kJ/mol, 0 kJ/mol and +51.3 kJ/mol, respectively?

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

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What are the common factors that affect a student's understanding of the periodic table and chemical elements?

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

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What is the equilibrium constant at a temperature of 298 K for the reaction 2NOCl(g) ⇌ 2NO(g) + Cl2(g) if the initial concentrations at equilibrium are [NOCl] = 0.200 M, [NO] = 0.0250 M, and [Cl2] = 0.0250 M?

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

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Sure, here's a precise question related to balancing chemical equations:Balance the following chemical equation:Fe + HCl → FeCl3 + H2

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

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What is the VSEPR geometry of a molecule consisting of one central atom and five atoms attached to it, where the central atom has two lone pairs of electrons?

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

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What is the pH of a solution that contains 0.1 M hydrochloric acid, HCl?

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

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Identify the type of intermolecular force present in water (H2O).

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

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How does the temperature affect the structure and behavior of a lipid bilayer membrane in molecular dynamics simulations?

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

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What is the pH of a 0.1 M solution of hydrochloric acid (HCl)? (Ka for HCl = very large, essentially 0)

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

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How does the use of a catalyst affect the rate of the reaction between hydrogen peroxide and potassium iodide?

asked Feb 28 in Chemical kinetics 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 can the synthesis of zeolites be optimized for their use in industrial applications?

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

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How does increasing the temperature affect the photochemical reaction rate of [specific chemical] under [specific wavelength of light]?

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

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What is the pH of a 0.1 M solution of hydrochloric acid at 25°C?

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

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What is the amount of heat required to completely vaporize 200 g 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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How can you design a drug that effectively treats Type 2 Diabetes by targeting specific metabolic pathways, while minimizing potential side effects?

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

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How does the zeta potential affect the stability of colloidal systems in electrokinetic phenomena?

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

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What is the enthalpy change for the reaction of burning 1 mole of methane gas (CH4) at standard conditions (25°C and 1 atm)?

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

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How can the yield of the synthesis of nylon-6,6 from adipic acid and hexamethylenediamine be improved by modifying the reaction parameters and what impact does the modification have on the properties of the resulting polymer?

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

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