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How has the historical development of atomic theory influenced our current understanding of chemical reactions?
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Feb 20
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Chemical education
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How has the historical and evolutionary development of chemistry shaped the current understanding and application of chemical principles and technologies?
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Feb 20
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Chemical education
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Identify the heterocyclic compound among the following molecules and explain its structure and properties:a) Pyridine (C5H5N)b) Benzene (C6H6)c) Ethanol (C2H6O)d) Cyclohexane (C6H12)
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Feb 20
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Organic Chemistry
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EdytheEwk100
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What is the heat of sublimation of carbon dioxide (CO2) at standard pressure and temperature (STP)?
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Feb 20
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ThermoChemistry
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RandellBeggs
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What is the heat of sublimation of iodine, given that the molar heat of fusion is 15.52 kJ/mol and the molar heat of vaporization is 41.39 kJ/mol?
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Feb 20
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ThermoChemistry
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DieterSchrod
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What is the heat of sublimation for dry ice (solid carbon dioxide) given that its enthalpy of fusion is 9.2 kJ/mol and its enthalpy of vaporization is 25.1 kJ/mol?
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Feb 20
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ThermoChemistry
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TiaraFitzgib
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What is the heat of sublimation for dry ice (solid carbon dioxide) if it requires 25.2 kJ of energy to sublime 1 mole of dry ice at its standard-state conditions?
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Feb 20
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ThermoChemistry
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WallaceMaria
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What is the heat of hydration for magnesium sulfate when dissolved in water, assuming a mass of 10 grams of magnesium sulfate is dissolved in 100 mL of water?
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Feb 20
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ThermoChemistry
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AundreaWhitf
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What is the heat of formation of water (H2O) at standard conditions (25°C and 1 atm pressure) if the enthalpy change of the reaction 2H2(g) + O2(g) → 2H2O(l) is -484 kJ/mol?
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Feb 20
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Chemical bonding
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VictorinaWoz
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What is the heat of formation of hydrogen chloride (HCl) if the enthalpy change of the reaction 2H2(g) + Cl2(g) -> 2HCl(g) is -184.6 kJ/mol?
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Feb 20
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Chemical bonding
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JewelSchaffe
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What is the heat of formation of methane (CH4) assuming standard conditions (25°C and 1 atm pressure)?
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Feb 20
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Chemical bonding
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BoydHaynes98
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What is the heat of formation for methane (CH4) at standard conditions (25°C and 1 atm pressure)? Provide your answer in kilojoules per mole (kJ/mol).
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Feb 20
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Chemical bonding
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MathewForman
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What is the heat of combustion (in kJ/mol) of butane (C4H10) gas at 25°C and 1 atm pressure, assuming complete combustion?
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Feb 20
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Chemical reactions
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WalterC19362
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What is the heat capacity of a substance if it takes 345 Joules of energy to raise the temperature of 15 grams of the substance by 12 degrees Celsius?
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Feb 20
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ThermoChemistry
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540252730007
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What is the electronic structure and bonding analysis of a water molecule using Hartree-Fock method, and how does the formation of molecular orbitals contribute to the stability of the molecule?
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Feb 20
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Quantum Chemistry
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What is the mechanism of synthesis of pyridine via the Hantzsch pyridine synthesis method, and how does the addition of a catalytic amount of iodine to the reaction mixture impact the yield and purity of the product?
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Feb 20
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Organic Chemistry
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QNZGertie668
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What is the predicted reactivity trend for the halogens (Group 17) in terms of their electronic configuration, and how does this trend relate to their ability to gain electrons?
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Feb 20
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Inorganic Chemistry
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SherrillDail
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What is the optimal chemical composition and process conditions for the production of a high-yield and cost-effective nitrogen-based fertilizer using the Haber-Bosch process?
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Feb 20
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Chemical engineering
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JoyEdge34400
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How does the mechanism of adsorption on the catalyst surface affect the rate of reaction for the production of ammonia through the Haber-Bosch process?
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Feb 20
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Surface Chemistry
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HoraceT7712
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What temperature, pressure, and chemical conditions are required for the Haber process to produce ammonia at an optimum rate for fertilizer production, given a certain amount of reactants?
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Feb 20
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Chemical engineering
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YvonneRausch
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