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What is the Gibbs free energy change for the formation of 2 moles of water molecules from hydrogen gas and oxygen gas at standard conditions (298 K and 1 atm pressure)? Give the answer in kJ/mol.

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

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What is the standard enthalpy change for the phase transition reaction of ice to water at 1 atm and 25°C? Given the enthalpies of fusion and vaporization of water as 6.01 kJ/mol and 40.67 kJ/mol, respectively.

asked Mar 1 in Chemical thermodynamics 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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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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How can we modify the synthesis technique for carbon nanotubes to increase their purity and homogeneity?

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

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What is the enthalpy of vaporization of water if 50.0 g of water at 100°C is converted to steam at 100°C? The heat capacity of water is 4.184 J/g°C and the molar heat of vaporization of water is 40.7 kJ/mol.

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

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How many structural isomers are possible for the coordination compound [Co(en)2Cl2]+, where en is ethylenediamine? Also, draw the structures of all the possible isomers.

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

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How does the urea cycle contribute to the disposal of excess nitrogen in the body during amino acid metabolism, and what are the key enzymes involved in this process?

asked Feb 28 in BioChemistry 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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What is the pH of a 0.1 M hydrochloric acid solution at 25°C, determined using a calibrated pH meter with a sensitivity of 0.01 pH units?

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

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What is the enthalpy of solution of 5 grams of ammonium nitrate in 100 grams of water at room temperature? Given the molar heat of solution for ammonium nitrate is -25.7 kJ/mol.

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

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What is the standard enthalpy change when 5 grams of sodium chloride (NaCl) dissolves in 100 mL of water at a temperature of 25°C?

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

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What is the standard enthalpy change for the dissolution of 5.00g of sodium chloride (NaCl) in 100mL of water (H2O) at 25°C? The molar mass of NaCl is 58.44 g/mol and the density of water at this temperature is 0.997 g/mL.

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

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How can we design a chemical reactor that maximizes the yield of product X in a specific reaction, given the reaction kinetics, feed flow rate, and reactor volume constraints?

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

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What is the formal charge on the central atom in the compound SO$_3$? Provide a step-by-step calculation to arrive at your answer.

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

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What is the formal charge on the central atom (in brackets) in SO3²⁻? Calculate the formal charge on sulfur (S) and explain whether the molecule is overall neutral or has a charge.

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

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What is the corrosion current density of a copper metal in a galvanic couple with a silver metal in a 0.1 M solution of NaCl at 25°C, given that the open circuit potential is 0.34 V and the Tafel slope is 120 mV/decade for the copper electrode?

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

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What methods can be used to reduce the environmental impact of industrial waste disposal, and how do these methods compare in terms of effectiveness and feasibility in different industries and geographic locations?

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

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What is the effect of temperature on the behavior of a polymer chain using Monte Carlo simulations? Analyze the changes in the radius of gyration of the polymer chain as temperature is varied.

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

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What is the standard enthalpy change for the vaporization of 50g of water at its boiling point (100°C) and 1 atm (pressure of the atmosphere)? Given that the standard enthalpy of vaporization of water is 40.79 kJ/mol.

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

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