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Calculate the standard enthalpy change for the given reaction using the given data:2H2(g) + O2(g) --> 2H2O(l)Given:ΔHf°(H2O(l)) = -285.83 kJ/molΔHf°(O2(g)) = 0 kJ/molΔHf°(H2(g)) = 0 kJ/mol

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

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Design a series of experiments to investigate the effect of different types of saturated and unsaturated fatty acids on lipid signaling and metabolism in mammalian cells.

asked Feb 4 in BioChemistry by Daniele27V22 (290 points)

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Design a retrosynthesis pathway for the synthesis of ibuprofen from starting materials that have no more than 6 carbons.

asked Feb 4 in Organic Chemistry by KiaWhitis116 (390 points)

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Calculate the standard free energy change for the following redox reaction at 298 K:2 Mg(s) + O2(g) -> 2 MgO(s)(The standard reduction potential for Mg2+/Mg is -2.37 V and for O2/H2O is +1.23 V)

asked Feb 3 in Chemical thermodynamics by DeneseHamble (530 points)

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Calculate the standard enthalpy change (∆H°) and standard entropy change (∆S°) for the reaction between solid aluminum and gaseous oxygen to form solid aluminum oxide, given the following balanced chemical equation:4Al(s) + 3O2(g) → 2Al2O3(s) The standard enthalpies of formation of Al(s), O2(g), and Al2O3(s) are -394.4 kJ/mol, 0 kJ/mol, and -1675.7 kJ/mol, respectively. The standard entropy change for the reaction of O2(g) to form Al2O3(s) is -159.6 J/K·mol.

asked Feb 3 in Inorganic Chemistry by HenryMesser6 (490 points)

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Calculate the wavelength of light that must be absorbed for an electron in a hydrogen atom to transition from the n=3 to n=2 energy level, using the equation for energy of a hydrogen atom: E = -13.6/n^2 eV and the Planck constant, h = 6.626 × 10^-34 J s.

asked Feb 3 in Quantum Chemistry by DonMcAlister (190 points)

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Design an antibiotic to specifically target gram-negative bacteria using principles of medicinal chemistry.

asked Feb 4 in Medicinal Chemistry by LXKVilma3586 (350 points)

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Calculate the standard enthalpy change of formation of magnesium oxide (MgO) using the following data: ΔH°f for Mg (s) = 0 kJ/molΔH°f for O₂ (g) = 0 kJ/mol ΔH°c for MgO (s) = -601.8 kJ/mol

asked Feb 3 in Chemical thermodynamics by YongSheehy6 (250 points)

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1 answer 46 views

Calculate the standard molar entropy change for the reaction: 2 SO2(g) + O2(g) → 2 SO3(g) at 298 K, given the following standard molar entropies: ΔS°(SO2(g)) = 248.2 J K^-1 mol^-1 ΔS°(O2(g)) = 205.0 J K^-1 mol^-1 ΔS°(SO3(g)) = 256.2 J K^-1 mol^-1

asked Feb 3 in Quantum Chemistry by TiaPritt9171 (190 points)

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Design a retrosynthesis plan to synthesize ibuprofen from benzene.

asked Feb 4 in Organic Chemistry by ShantaeBrumm (390 points)

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How can molecular docking studies be used to discover new drugs for a specific target protein, and what factors need to be considered in order to ensure drug efficacy and specificity?

asked Feb 5 in Computational Chemistry by RayfordHerri (510 points)

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Design a retrosynthesis for the synthesis of 2-phenylpropionic acid from benzene, ethylene, and CO₂.

asked Feb 4 in Organic Chemistry by IAEAndre2344 (530 points)

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Calculate the standard enthalpy change and entropy change for the reaction: 2Fe(s) + 3/2O2(g) -> Fe2O3(s) Given the standard enthalpies of formation of Fe(s), O2(g), and Fe2O3(s) are -0.44 kJ/mol, 0 kJ/mol, and -826 kJ/mol, respectively. Also, the standard molar entropy of Fe2O3(s) is 87.4 J/(mol K).

asked Feb 3 in Inorganic Chemistry by AYHHildegard (350 points)

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Design a process for the purification of a sample of crude oil. Describe the steps and the equipment needed for the process. Also, provide a brief explanation of the principles behind each step.

asked Feb 4 in Chemical engineering by Bonita039700 (610 points)

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Design a process for the large-scale production of hydrogen peroxide with high purity and yield, taking into consideration the environmental and economic factors.

asked Feb 4 in Chemical engineering by BrandiKossak (330 points)

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Design a distillation column that separates a mixture of ethanol and water with a 95% ethanol purity and a production rate of 1000 liters per hour. The mixture contains 50% ethanol and 50% water by volume. The distillation column should operate at a pressure of 1 atm and a temperature range of 78-85°C. Assume that the feed enters the column as a saturated liquid and that the overhead product is 90% ethanol, while the bottom product is 5% ethanol. Determine the number of stages required and the reflux ratio for this system.

asked Feb 3 in Chemical engineering by KristalBoldt (490 points)

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Design a process for the optimized production of acrylic adhesives, taking into consideration the factors affecting adhesion strength, durability, and cost-effectiveness.

asked Feb 4 in Chemical engineering by ConcepcionBo (710 points)

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1 answer 41 views

Design a distillation column for the separation of a mixture containing 35% Ethanol and 65% Water. Calculate the number of theoretical plates required for the separation if the column operates at a pressure of 1 atm and a reflux ratio of 1.5.

asked Feb 3 in Chemical engineering by EnriquetaPat (270 points)

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1 answer 51 views

Calculate the standard enthalpy change (in kJ/mol) for the following reaction involving solutions: NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)Given the following enthalpy values:NaOH(aq): -469.2 kJ/mol HCl(aq): -167.2 kJ/mol NaCl(aq): -411.2 kJ/mol H2O(l): -285.8 kJ/mol

asked Feb 3 in Chemical thermodynamics by MaureenFelix (350 points)

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Calculate the standard electrode potential for the following redox reaction at 298 K: Fe3+(aq) + e- → Fe2+(aq) Given that the standard electrode potential for the half-reaction Fe3+(aq) + e- → Fe2+(aq) is +0.77 V.

asked Feb 3 in Chemical thermodynamics by LaurenMacon (350 points)

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