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Calculate the lattice energy of magnesium oxide (MgO) given the following data: Ionization energy of magnesium (Mg): 738 kJ/mol Electron affinity of oxygen (O): -141 kJ/mol Lattice energy of MgO at standard conditions: -3795 kJ/mol Bond length between Mg and O: 203 pm

asked Jan 23 in Inorganic Chemistry by SylviaPettey (2.4k points)

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Calculate the lattice energy of magnesium oxide (MgO) given that the magnesium ion has a charge of +2 and the oxide ion has a charge of -2. The lattice energy can be calculated using the Born-Haber cycle and the following data:- The enthalpy of sublimation of magnesium (Mg) is 147 kJ/mol- The first ionization energy of magnesium is 738 kJ/mol- The enthalpy of formation of MgO is -601 kJ/mol- The electron affinity of oxygen is -141 kJ/mol- The enthalpy of dissociation of oxygen molecules is 498 kJ/mol.

asked Jan 23 in Inorganic Chemistry by WilburGuerre (2.3k points)

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Calculate the lattice energy of magnesium oxide (MgO) given that the lattice enthalpy of magnesium (Mg) is 3944 kJ/mol and that of oxygen (O) is 751 kJ/mol.

asked Jan 23 in Inorganic Chemistry by MalcolmUribe (2.0k points)

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Calculate the lattice energy of magnesium oxide (MgO) given that the ionic radii for Mg2+ and O2- are 0.72 Å and 1.40 Å respectively, and the lattice energy of MgO is -3795 kJ/mol.

asked Jan 23 in Inorganic Chemistry by MOIRoderick9 (1.8k points)

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Calculate the lattice energy of LiF using the Born-Haber cycle, given the following enthalpies of formation and sublimation energies: ΔH°sub (Li) = 161 kJ/mol ΔH°sub (F2) = 155 kJ/mol ΔH°f (LiF) = - 590 kJ/mol IE (Li) = 520 kJ/mol EA (F) = -328 kJ/mol.

asked Jan 23 in Inorganic Chemistry by QTHGenevieve (1.7k points)

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Calculate the lattice energy of CaO given the following information: the enthalpy of formation of CaO is -635 kJ/mol, the ionization energy of Ca is 590 kJ/mol, the electron affinity of O is -141 kJ/mol, and the Ca–O bond length is 2.23 Å.

asked Jan 23 in Inorganic Chemistry by StuartCarson (2.4k points)

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Calculate the lattice energy of CaO given the following information: the distance between the Ca2+ and O2- ions is 2.32 Å, the charge on the ions is +2 and -2 respectively, and the Madelung constant for CaO is 1.74.

asked Jan 23 in Inorganic Chemistry by CarltonWoote (1.7k points)

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Calculate the lattice energy of calcium fluoride (CaF2) given the following information: the ionic radii of Ca and F are 100 pm and 133 pm, respectively, the lattice energy of NaCl is 788 kJ/mol, and the Born-Lande equation constant is 2.56.

asked Jan 23 in Inorganic Chemistry by TobiasTudawa (1.9k points)

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Calculate the lattice energy of calcium fluoride (CaF2) given that the lattice enthalpy of formation of Ca2+ is +178 kJ/mol, the lattice enthalpy of formation of F- is -328 kJ/mol and the distance between the Ca2+ and F- ions is 231 pm.

asked Jan 23 in Inorganic Chemistry by ChastityHoll (1.8k points)

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Calculate the lattice energy of Calcium Chloride (CaCl2) using Born-Haber cycle and Hess's law, given that the following information:- Dissociation energy of Cl2 molecule is 243 kJ/mol- First ionization energy of Ca atom is 590 kJ/mol- Second ionization energy of Ca atom is 1145 kJ/mol- Electron affinity of Cl atom is -348 kJ/mol- Heat of sublimation of Ca metal is 178 kJ/mol- Bond energy of Cl-Cl molecule is 242 kJ/mol

asked Jan 23 in Inorganic Chemistry by OrenTherrien (1.8k points)

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Calculate the lattice energy of CaCl2 given that the distance between the Ca2+ and Cl- ions in the crystal lattice is 0.231 nm and the Born-Lande equation constant is 2.21 x 10^-19 J nm.

asked Jan 23 in Inorganic Chemistry by RandellGunte (2.1k points)

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Calculate the irreversible work done by a gas expanding adiabatically from an initial volume of 1 L to a final volume of 5 L against a constant external pressure of 2 atm, assuming that the gas is initially at a temperature of 300 K and that its final temperature is 400 K.

asked Jan 23 in Physical Chemistry by AngeliaDewey (1.8k points)

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Calculate the internal energy and entropy change for a gas that undergoes an isothermal expansion from 2.0 L to 3.0 L at a constant temperature of 300 K.

asked Jan 23 in Physical Chemistry by CletaF793120 (2.8k points)

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Calculate the HOMO-LUMO gap of a conjugated polymer consisting of 50 monomers, assuming that the polymer is periodic in the z-direction, using a density functional theory (DFT) program of your choice. Also, determine the absorption spectrum of the polymer in the UV-vis region, and predict its color in solution.

asked Jan 23 in Quantum Chemistry by KraigFeldman (2.2k points)

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Calculate the HOMO-LUMO energy gap of a conjugated polymer with a repeating unit of poly(p-phenylene vinylene) (PPV) using quantum chemical methods (such as Density Functional Theory) and determine whether the polymer is expected to exhibit optoelectronic activity in the visible region of the electromagnetic spectrum.

asked Jan 23 in Quantum Chemistry by CandelariaFe (1.6k points)

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Calculate the heat required to sublime 34.5 g of dry ice (solid CO2) at a constant temperature and pressure, given that the heat of sublimation of CO2 is 25.2 kJ/mol.

asked Jan 23 in ThermoChemistry by Aline0805519 (1.8k points)

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Calculate the heat required to sublime 25 grams of dry ice (CO2) at a temperature of -78.5 °C if the enthalpy of sublimation is 25.2 kJ/mol.

asked Jan 23 in ThermoChemistry by HIELucille73 (2.1k points)

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Calculate the heat required to sublime 20.0 grams of dry ice (solid carbon dioxide) at a temperature of -78.5 °C, given the heat of sublimation of CO2 is 25.2 kJ/mol.

asked Jan 23 in ThermoChemistry by LorenaReinha (1.8k points)

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Calculate the heat required to sublime 10 grams of dry ice (carbon dioxide) at its melting point (-78.5°C) and convert it to a gas at its boiling point (-57°C). The heat of sublimation of carbon dioxide is 25.2 kJ/mol.

asked Jan 23 in ThermoChemistry by KellieDefazi (1.8k points)

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Calculate the heat required to raise the temperature of a 50 g sample of water from 25°C to 85°C, given that the specific heat capacity of water is 4.184 J/g°C.

asked Jan 23 in ThermoChemistry by XGJSidney76 (1.4k points)

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