Recent questions in Chemical bonding

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Calculate the heat of formation of methane (CH4) given the following thermochemical equations and standard heats of formation:2H2 (g) + O2 (g) → 2H2O (l) ΔH° = -572 kJ/molC (s) + O2 (g) → CO2 (g) ΔH° = -393.5 kJ/molNote: The standard heat of formation of CH4 is -74.8 kJ/mol.

asked Jan 23 in Chemical bonding by Genevieve973 (350 points)

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Calculate the heat of formation of methane (CH4) given the following bond energy values: C-H bond energy = 413 kJ/mol and C-C bond energy = 348 kJ/mol.

asked Jan 23 in Chemical bonding by CrystleHumph (530 points)

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Calculate the heat of formation of methane (CH4) given the enthalpies of formation of H2(g) = 0 kJ/mol and CH3(g) = 120.6 kJ/mol.

asked Jan 23 in Chemical bonding by HassieCooch5 (430 points)

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Calculate the heat of formation of carbon dioxide gas (CO2) given the following bond energies: C=O bond energy is 799 kJ/mol and C-O bond energy is 358 kJ/mol.

asked Jan 23 in Chemical bonding by Margarita30G (490 points)

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Calculate the heat of formation of carbon dioxide (CO2) using the following information: The heat of formation of carbon monoxide (CO) is -110.5 kJ/mol and the heat of formation of water (H2O) is -285.8 kJ/mol.

asked Jan 23 in Chemical bonding by JamesCutler4 (250 points)

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Calculate the heat of formation of carbon dioxide (CO2) given the following information: heat of formation of C(graphite) = 0 kJ/mol, heat of formation of O2(g) = 0 kJ/mol, and heat of combustion of graphite = -393.5 kJ/mol.

asked Jan 23 in Chemical bonding by KarryAutry49 (410 points)

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Calculate the heat of formation of a water molecule from its elements, hydrogen and oxygen gas, given that the standard enthalpy of formation of hydrogen gas is -285.8 kJ/mol and the standard enthalpy of formation of oxygen gas is 0 kJ/mol. Show all your work and explain what the resulting sign of the enthalpy of formation means in terms of the stability of the water molecule.

asked Jan 23 in Chemical bonding by FrancescaShe (530 points)

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Calculate the heat of formation for the compound methane (CH4) given that the enthalpy change for the reaction of carbon (C) with hydrogen gas (H2) to form methane gas (CH4) is -74.8 kJ/mol.

asked Jan 23 in Chemical bonding by NinaPichardo (330 points)

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1 answer 47 views

Calculate the heat of formation (ΔHf) of methane (CH4) given the following bond energies: C-C = 347 kJ/mol, C-H = 413 kJ/mol.

asked Jan 23 in Chemical bonding by SaundraKauff (390 points)

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Calculate the heat of formation (∆Hf) of water (H2O) given the following reactions and their respective heats of reaction (∆Hr):2H2(g) + O2(g) → 2H2O(g); ∆Hr = -484 kJ/mol ½ O2(g) + H2(g) → H2O(l); ∆Hr = -285.8 kJ/mol Note: The heat of formation is the amount of heat released or absorbed when one mole of a compound is formed from its elements in their standard states.

asked Jan 23 in Chemical bonding by OnaKee41409 (390 points)

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Calculate the formal charge on the nitrogen atom in the molecule NO3-.

asked Jan 23 in Chemical bonding by YBIDani5971 (490 points)

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1 answer 42 views

Calculate the formal charge on each atom in the molecule CO3^2-.

asked Jan 23 in Chemical bonding by MaxineDqh486 (390 points)

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1 answer 7 views

Calculate the formal charge of the nitrogen atom in the molecule NH3. Show your work and explain the significance of the result.

asked Jan 23 in Chemical bonding by EarleneOldha (230 points)

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1 answer 46 views

Calculate the formal charge of oxygen in the molecule SO2.

asked Jan 23 in Chemical bonding by DixieCouch44 (430 points)

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Calculate the formal charge of nitrogen in the molecule of ammonia (NH3) assuming it has single covalent bonds.

asked Jan 23 in Chemical bonding by EarleFrost99 (410 points)

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1 answer 44 views

Calculate the formal charge of nitrogen in the molecule NO₃⁻.

asked Jan 23 in Chemical bonding by RenaChesser8 (710 points)

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1 answer 53 views

Calculate the formal charge of nitrogen in the molecule NO3-.

asked Jan 23 in Chemical bonding by GonzaloHowit (590 points)

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1 answer 37 views

Calculate the formal charge of each atom in the molecule SO3.

asked Jan 23 in Chemical bonding by EdithColebat (530 points)

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1 answer 42 views

Calculate the electronegativity difference between hydrogen (electronegativity of 2.20) and chlorine (electronegativity of 3.16) and determine the type of bond formed between them according to the electronegativity difference classification.

asked Jan 23 in Chemical bonding by AngusUmbagai (590 points)

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1 answer 41 views

Calculate the electronegativity difference between chlorine (Cl) and sodium (Na) atoms, and determine the type of bond that would form between them.

asked Jan 23 in Chemical bonding by Maryellen94N (590 points)

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