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Calculate the standard enthalpy of formation of potassium nitrate (KNO3) given the following information:- Heat of combustion of potassium is -468 kJ/mol- Heat of combustion of nitrogen is -940 kJ/mol- Heat of combustion of oxygen is -283.8 kJ/mol- Heat of formation of KNO3 is -383 kJ/mol.

asked Feb 3 in Chemical thermodynamics by Fern52B69739 (290 points)

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Calculate the standard enthalpy of formation of methanol, CH3OH (l), given that the standard enthalpy of combustion of methanol is -726.4 kJ/mol and the standard enthalpy of formation of carbon dioxide and water are -393.5 kJ/mol and -285.8 kJ/mol, respectively.

asked Feb 3 in ThermoChemistry by Mckinley52S2 (330 points)

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Calculate the standard enthalpy of formation of methane gas (CH4) given the standard enthalpies of formation for carbon dioxide (CO2) (-393.5 kJ/mol) and water vapor (H2O) (-241.8 kJ/mol).

asked Feb 3 in ThermoChemistry by AlvinGerken8 (470 points)

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Calculate the standard enthalpy of formation of methane gas (CH4) given the following data:- ∆H°combustion of methane = -890.36 kJ/mol - ∆H°formation of H2O (l) = -285.8 kJ/mol - ∆H°formation of CO2 (g) = -393.5 kJ/mol

asked Feb 3 in ThermoChemistry by AliceCahill0 (390 points)

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Calculate the standard enthalpy of formation of methane (CH4) given the following enthalpy data: C(graphite) + 2H2(g) → CH4(g) ΔH° = -74.8 kJ/mol ΔH°f[C(graphite)] = 0 kJ/molΔH°f[H2(g)] = 0 kJ/mol (Hint: Use Hess's Law and the fact that the standard enthalpy of formation of an element in its most stable state is zero.)

asked Feb 3 in ThermoChemistry by RobbiePartee (650 points)

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Calculate the standard enthalpy of formation of methane (CH4) given that the standard enthalpies of formation for CO2 and H2O are -393.5 kJ/mol and -285.8 kJ/mol, respectively.

asked Feb 3 in ThermoChemistry by CecilHailes (470 points)

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Calculate the standard enthalpy of formation of hydrogen fluoride (HF) given the following reactions and enthalpy change values:2H2(g) + O2(g) → 2H2O(g) ΔH° = -484 kJH2(g) + Cl2(g) → 2HCl(g) ΔH° = -184 kJ1/2 F2(g) + H2(g) → HF(g) ΔH° = -273 kJ.

asked Feb 3 in ThermoChemistry by VilmaSons86 (230 points)

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Calculate the standard enthalpy of formation of glucose (C6H12O6) given that the standard enthalpies of combustion for glucose, carbon, and hydrogen are -2803.6 kJ/mol, -393.5 kJ/mol, and -285.8 kJ/mol, respectively.

asked Feb 3 in ThermoChemistry by JuneSantora (430 points)

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Calculate the standard enthalpy of formation of ethane (C2H6) given the following bond energies (in kJ/mol):C-C: 347C-H: 413 Note: The equation for the formation of ethane is:C(graphite) + 3H2(g) -> C2H6(g)

asked Feb 3 in ThermoChemistry by KieraSeton95 (450 points)

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Calculate the standard enthalpy of formation of carbon dioxide given the following information: - Standard enthalpy of formation of graphite = 0 kJ/mol- Standard enthalpy of formation of oxygen gas = 0 kJ/mol- Enthalpy of combustion of graphite = -393.5 kJ/mol- Enthalpy of combustion of carbon monoxide = -283.0 kJ/mol- Enthalpy of combustion of hydrogen gas = -285.8 kJ/mol

asked Feb 3 in Chemical thermodynamics by KeriL9813532 (490 points)

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Calculate the standard enthalpy of formation of carbon dioxide gas (CO2) given the following information: C(s) + O2(g) → CO2(g) ΔH = -393.5 kJ/mol H2(g) + 1/2O2(g) → H2O(l) ΔH = -285.8 kJ/mol 2C(s) + 2H2(g) + 5/2O2(g) → 2CO2(g) + 2H2O(l) ΔH = -890.4 kJ/mol

asked Feb 3 in ThermoChemistry by Collin175371 (230 points)

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Calculate the standard enthalpy of formation of carbon dioxide from its elements under standard conditions given the following information:- The standard enthalpy of combustion of carbon to CO2 is -393.5 kJ/mol- The standard enthalpy of combustion of hydrogen to H2O is -285.8 kJ/mol- The standard enthalpy of formation of water is -241.8 kJ/mol.Note: The standard enthalpy of formation of an element in its standard state is zero.

asked Feb 3 in ThermoChemistry by RachaelPetty (310 points)

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Calculate the standard enthalpy of formation of Carbon dioxide (CO2), given the enthalpies of formation of Carbon monoxide (CO) and Oxygen gas (O2) as -110.5 kJ/mol and 0 kJ/mol, respectively.

asked Feb 3 in ThermoChemistry by DelFreud677 (430 points)

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1 answer 33 views

Calculate the standard enthalpy of formation of carbon dioxide (CO2) using the following information:C(graphite) + O2(g) -> CO2(g), ΔH° = -393.5 kJ/molC(graphite) + 2H2(g) -> CH4(g), ΔH° = -74.8 kJ/mol2H2(g) + O2(g) -> 2H2O(l), ΔH° = -572.0 kJ/mol

asked Feb 3 in ThermoChemistry by ChaseM67258 (370 points)

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1 answer 29 views

Calculate the standard enthalpy of formation of carbon dioxide (CO2) using the following data:C(graphite) + O2(g) → CO2(g) ΔH° = -393.5 kJ/mol2H2(g) + O2(g) → 2H2O(l) ΔH° = -572.0 kJ/molHint: Use Hess's law to calculate the standard enthalpy of formation of CO2.

asked Feb 3 in ThermoChemistry by LouieHandley (270 points)

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1 answer 33 views

Calculate the standard enthalpy of formation of C2H6(g) given the following information: C(s) + O2(g) → CO2(g); ΔH° = -393.5 kJ/mol H2(g) + 1/2 O2(g) → H2O(l); ΔH° = -285.8 kJ/mol 2C(s) + 3H2(g) → C2H6(g); ΔH° = ?

asked Feb 3 in ThermoChemistry by RileyBethune (310 points)

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1 answer 25 views

Calculate the standard enthalpy of formation of ammonia gas (NH3) using the following information:- Standard enthalpy of formation for nitrogen gas (N2) = 0 kJ/mol- Standard enthalpy of formation for hydrogen gas (H2) = 0 kJ/mol- Standard enthalpy of formation for ammonia gas (NH3) = -46 kJ/mol

asked Feb 3 in Chemical thermodynamics by RachelleSpah (230 points)

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Calculate the standard enthalpy of formation of aluminum oxide from its elements given the following information:2 Al(s) + 3/2 O2(g) → Al2O3(s) ΔH°rxn = - 1675.7 kJ/molStandard enthalpy of formation of Al(s) = 0 kJ/molStandard enthalpy of formation of O2(g) = 0 kJ/mol

asked Feb 3 in ThermoChemistry by LaneLaughlin (330 points)

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1 answer 26 views

Calculate the standard enthalpy of formation for propene (C3H6) given that the standard enthalpy of combustion of propene is -1411.1 kJ/mol and the standard enthalpy of formation of carbon dioxide (CO2) and water (H2O) are -393.5 kJ/mol and -285.8 kJ/mol respectively.

asked Feb 3 in Chemical thermodynamics by TabathaHerma (410 points)

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1 answer 29 views

Calculate the standard enthalpy of formation for magnesium oxide (MgO) given the standard enthalpy of formation for magnesium (Mg) is -601.8 kJ/mol and the standard enthalpy of formation for oxygen (O₂) is 0 kJ/mol.

asked Feb 3 in ThermoChemistry by KrystynaHugg (350 points)

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