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Using molecular orbital theory, calculate the bond order and predict the stability of nitrogen molecule (N2)?

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

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What is the exchange current density for a copper electrode in contact with a 1M solution of CuSO4 at a temperature of 25°C if the electrode potential is measured to be 0.25 V versus the standard hydrogen electrode?

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

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How can the use of Ab initio calculations improve our understanding of excited state dynamics in chemical reactions?

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

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What is the lattice energy of Calcium oxide (CaO)? Calculate the lattice energy using Born-Haber cycle and explain the factors that affect the lattice energy of CaO.

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

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What is the entropy change for a monatomic ideal gas when the gas expands isothermally from volume V1 to volume V2 inside a container at temperature T?

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

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What are the factors that affect the stability of colloidal solutions and how can they be adjusted to prevent coagulation?

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

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What is the enthalpy change for the combustion of one mole of methane (CH4) gas to form carbon dioxide (CO2) gas and water (H2O) vapor at standard temperature and pressure (STP)?

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

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What is the enthalpy change when 2.5 moles of methane are burned completely in excess oxygen gas, given that the enthalpy of combustion of methane is -890 kJ/mol?

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

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What is the amount of heat released when 2.5 grams of ethanol (C2H5OH) burns completely in excess oxygen, given that the heat of combustion of ethanol is -1371 kJ/mol and the molar mass of ethanol is 46.07 g/mol?

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

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What is the amount of heat released when 2.5 moles of propane (C3H8) is completely burned in oxygen gas (O2) according to the balanced equation: C3H8 + 5O2 → 3CO2 + 4H2O given that the standard enthalpy of combustion of propane is -2220 kJ/mol?

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

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What is the heat released during the combustion of 5 grams of propane (C3H8) at constant volume, given that the enthalpy change of combustion of propane is -2220 kJ/mol?

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

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1 answer 100 views

What is the corrosion current density of iron in a 0.1 M hydrochloric acid solution at 25 °C, if the corrosion potential of the metal is -0.44 V vs. the standard hydrogen electrode and the Tafel slope is 120 mV/decade of current density?

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

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How can the Williamson ether synthesis be used to synthesize a symmetrical ether from two different alkyl halides? Provide a stepwise mechanism for the reaction.

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

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What is the formal charge of the oxygen atom in the sulfate ion (SO4^(2-))? Show your calculation and explain the meaning of the formal charge in this context.

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

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What is the formal charge of the nitrogen atom in the molecule NO₂?

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

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What is the enthalpy change when dissolving 5 grams of NaOH in 100 ml of water at 25°C, given that the molar enthalpy of dissolution of NaOH is -44.5 kJ/mol?

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

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What is the standard enthalpy change for the vaporization of 50 grams of liquid water at 100°C and 1 atm pressure? Given that the molar enthalpy of vaporization of water is 40.6 kJ/mol.

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

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What is the optimum amount of hexamethylenediamine to be used in the synthesis of nylon-6,6 from adipic acid to get maximum yield?

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

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What is the activation energy for the oxidation of copper in a 1 M copper sulfate solution with a standard reduction potential of +0.34 V at 298 K, given that the exchange current density is 5.6 x 10^-6 Acm^-2 and the reaction order is unity?

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

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What experimental techniques can be utilized to identify the type of inorganic solid present in a given sample (ionic, covalent, or metallic)? Provide a detailed explanation of each technique and its corresponding results.

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

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