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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 heat of mixing when 50 mL of 1 M HCl is added to 50 mL of 1 M NaOH at 25°C assuming no heat loss to the surroundings? Given, the enthalpy of neutralization of 1 M HCl by 1 M NaOH is -55.9 kJ/mol.

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

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What is the enthalpy change of isomerization of butene-1 to cis-butene-2 at 25°C and 1 atm? Given that the molar enthalpy of combustion of butene-1 is -2657 kJ/mol and the molar enthalpy of combustion of cis-butene-2 is -2670 kJ/mol.

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

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What is the enthalpy change of isomerization for butene-1 to butene-2 given the following information:- The standard enthalpy of formation for butene-1 is -24.7 kJ/mol- The standard enthalpy of formation for butene-2 is -25.8 kJ/mol

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

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What is the change in enthalpy (in kilojoules) for the combustion reaction of methane (CH4) at standard conditions (298 K, 1 atm)?

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

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How does the temperature affect the orientational order parameter of a liquid crystal using Monte Carlo simulations?

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

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What are the most effective methods for treating and mitigating the environmental impact of hazardous waste generated by industrial processes and how can they be implemented in an economically feasible way?

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

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1 answer 89 views

One potential question for a student studying rearrangement reactions in organic chemistry is: What is the mechanism by which a Wagner-Meerwein rearrangement occurs and give an example of a molecule that undergoes this type of rearrangement?

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

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How does the variation in force field parameters affect the structure and stability of a DNA-protein complex in molecular dynamics simulations?

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

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What is the diffusion coefficient of oxygen in air at a temperature of 298 K and a pressure of 1 atm? Show the calculation and units used.

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

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What is the effect of pH on the zeta potential of colloidal particles and how can it be measured in the laboratory using electrophoresis?

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

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1 answer 96 views

What are the optimum reaction conditions (e.g. temperature, concentration of catalyst, reaction time, etc.) for the synthesis of polyvinyl alcohol from vinyl acetate monomer, and how do these conditions affect the properties of the resulting polymer?

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

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What are the specific skills and practical experiences that chemistry students need to acquire during their undergraduate studies, in order to be adequately prepared for chemistry-related careers in industry or academia?

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

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What is the standard enthalpy change for the reaction 2H₂(g) + O₂(g) -> 2H₂O(l), given the standard enthalpies of formation for H₂O(l), H₂(g) and O₂(g) as -285.8 kJ/mol, 0 kJ/mol and 0 kJ/mol, respectively?

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

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What is the VSEPR geometry of the molecule CH4?

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

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What strategies can be implemented to reduce nitrogen and phosphorus pollution in agricultural runoff and improve water quality in nearby bodies of water?

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

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What are the factors that affect the strength of chemical bonds and how do these factors contribute to the properties of different molecular structures?

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

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What is the equilibrium constant for the reaction N2 (g) + 3H2 (g) ↔ 2NH3 (g) at a temperature of 400°C and a pressure of 10 atm?

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

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Sure! Here's a question:Calculate the enthalpy change for the following chemical reaction: 2H2 (g) + O2 (g) → 2H2O (l) Given the following enthalpy changes: 2H2 (g) + O2 (g) → 2H2O (g) ΔH = -483.6 kJ/mol 2H2O (g) → 2H2O (l) ΔH = -40.7 kJ/mol

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

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1 answer 86 views

What factors affect the stability of oil-in-water emulsions and how can they be manipulated to enhance the stability of the emulsion?

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

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