Recent questions in ThermoChemistry

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What is the enthalpy of vaporization of water at 373K? Given the heat of formation of liquid water is -285.8 kJ/mol and the heat of formation of water vapor is -241.8 kJ/mol. The vapor pressure of water at the boiling point (373K) is 101.325 kPa.

asked Feb 20 in ThermoChemistry by AntoinetteWo (2.0k points)

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What is the enthalpy of vaporization of water at 100°C if it requires 40.7 kJ of energy to vaporize 1 mole of water?

asked Feb 20 in ThermoChemistry by Bernice06378 (1.4k points)

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What is the enthalpy of ionization for sodium, given that it takes 495 kJ/mol to remove one electron from a neutral sodium atom, and 4562 kJ/mol to remove a second electron from the sodium 1+ ion?

asked Feb 20 in ThermoChemistry by AHIKayleigh (2.3k points)

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What is the enthalpy of ionization of magnesium if it requires 576 kJ/mol of energy to completely remove one electron from a gaseous magnesium atom?

asked Feb 20 in ThermoChemistry by KellyStreeto (1.6k points)

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What is the enthalpy of ionization for a lithium atom when it loses one electron to form a Li+ ion in a gas phase? Given that the energy required to remove an electron from a gaseous Li atom is 520 kJ/mol.

asked Feb 20 in ThermoChemistry by KariMcCleary (1.5k points)

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What is the enthalpy of ionization of Hydrogen atom in the gas phase, given that its first ionization energy is 1312 kilojoules per mole and its second ionization energy is 2372.3 kilojoules per mole?

asked Feb 20 in ThermoChemistry by MonteEsteban (1.8k points)

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What is the enthalpy of formation of water (H2O) from its elements hydrogen and oxygen at standard conditions (25°C and 1 atm)?

asked Feb 20 in ThermoChemistry by Shelia708886 (2.1k points)

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1 answer 31 views

What is the enthalpy of formation of magnesium oxide (MgO) given the enthalpy of formation of magnesium (Mg) is -601 kJ/mol and the enthalpy of formation of oxygen (O2) is 0 kJ/mol?

asked Feb 20 in ThermoChemistry by IsobelMaggar (1.8k points)

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What is the enthalpy of formation of carbon dioxide (CO2) if the enthalpies of formation for carbon (C) and oxygen (O2) are -94 kJ/mol and 0 kJ/mol, respectively?

asked Feb 20 in ThermoChemistry by RamiroShockl (2.3k points)

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1 answer 35 views

What is the enthalpy of combustion of ethanol (C2H5OH) if the standard enthalpy change of combustion of ethanol is -1367 kJ/mol and the heat of formation of water (H2O) is -285.8 kJ/mol?

asked Feb 20 in ThermoChemistry by TatianaSteil (2.3k points)

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What is the enthalpy change of ionization of magnesium if 125 kJ of energy is required to completely remove one electron from a magnesium atom?

asked Feb 20 in ThermoChemistry by KyleWaddy213 (1.9k points)

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What is the enthalpy change of ionization for magnesium (Mg) given that it requires 738 kJ/mol to remove the first electron and 1450 kJ/mol to remove the second electron from a Mg atom?

asked Feb 20 in ThermoChemistry by LatashaWillc (2.7k points)

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What is the enthalpy change of adsorption when 10 grams of activated charcoal absorb 1 mole of methane gas at a temperature of 298 K? Given that the van't Hoff factor for the adsorption of methane on activated charcoal is 10.5 kJ/mol.

asked Feb 20 in ThermoChemistry by HoraceT7712 (2.0k points)

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1 answer 33 views

What is the enthalpy change for the ionization of one mole of magnesium in the gas phase, given that the ionization energy of magnesium is 738 kJ/mol and the electron affinity of magnesium is -50.1 kJ/mol? Show your work and include units in your answer.

asked Feb 20 in ThermoChemistry by AnibalX1615 (2.1k points)

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1 answer 32 views

What is the enthalpy change for the ionization of lithium with a first ionization energy of 520 kJ/mol?

asked Feb 20 in ThermoChemistry by DarbyKieran3 (2.0k points)

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What is the enthalpy change for the ionization of hydrogen atoms in the gas phase, given that the ionization energy of a hydrogen atom is 1312 kJ/mol?

asked Feb 20 in ThermoChemistry by MargueriteSa (2.1k points)

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1 answer 37 views

What is the enthalpy change (in kJ/mol) for the combustion of propane (C3H8) using Hess's Law? Use the following information: C3H8 + 5O2 → 3CO2 + 4H2O ∆H = −2043 kJ/mol 2CO + O2 → 2CO2 ∆H = −566 kJ/mol H2 + 1/2O2 → H2O ∆H = −285.8 kJ/mol

asked Feb 20 in ThermoChemistry by EffieQkd6688 (1.7k points)

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1 answer 28 views

What is the enthalpy change (in kJ/mol) for the combustion of methane, CH4(g), given the following thermochemical equation:CH4(g) + 2 O2(g) -> CO2(g) + 2 H2O(l)ΔHrxn = -890.3 kJ/mol

asked Feb 20 in ThermoChemistry by KelleS495456 (1.9k points)

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1 answer 29 views

What is the bond dissociation energy required to break the C-H bond in methane (CH4)?

asked Feb 18 in ThermoChemistry by AlishaGolder (1.9k points)

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1 answer 35 views

What is the bond dissociation energy required to break the carbon-hydrogen bond in methane (CH4)? (Hint: the bond dissociation energy is the amount of energy required to break a bond and form separate atoms or molecules.)

asked Feb 18 in ThermoChemistry by DoraSturm903 (1.8k points)

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