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Find the standard enthalpy change for the reaction: 2C2H5OH(l) + 9O2(g) --> 6CO2(g) + 8H2O(l) given the following information: Standard enthalpy of formation (ΔHfº) of C2H5OH(l) = -277 kJ/mol Standard enthalpy of formation (ΔHfº) of CO2(g) = -393.5 kJ/mol Standard enthalpy of formation (ΔHfº) of H2O(l) = -285.8 kJ/mol Assume that the reaction occurs at standard conditions.

asked 2 days ago in Chemical thermodynamics by LeonardVande (430 points)

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Determine the standard enthalpy change for the dissolution of 5.00 grams of magnesium chloride in water, given that the molar mass of MgCl2 is 95.21 g/mol and the standard enthalpy change of formation for magnesium chloride is -641.3 kJ/mol.

asked 2 days ago in Chemical thermodynamics by MaisieFenton (510 points)

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How can chemistry education be improved to place more emphasis on the principles of environmental chemistry, including the impact of chemicals on the environment and the role of chemistry in sustainable solutions?

asked 2 days ago in Chemical education by MiraMalley50 (450 points)

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Determine the oxidation state of the chromium atom in the compound potassium dichromate (K2Cr2O7).

asked 2 days ago in Inorganic Chemistry by QuincyMcEncr (350 points)

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How can chemistry students overcome limited access to laboratory equipment and facilities and still effectively learn and apply experimental techniques in the field?

asked 2 days ago in Chemical education by ArdisVyt3876 (410 points)

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How can drug design strategies be used to target specific metabolic pathways involved in metabolic disorders such as diabetes or obesity?

asked 1 day ago in Medicinal Chemistry by JeffreyCarru (330 points)

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Determine the bond angle in a water molecule using the VSEPR theory and explain how the shape of the molecule affects its polarity.

asked 2 days ago in Chemical bonding by Alyce51K2334 (270 points)

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How can chemistry educators incorporate comprehensive safety protocols in their lab curriculum to increase students' awareness and adherence to safe practices?

asked 2 days ago in Chemical education by LouannePethe (490 points)

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How can molecular docking studies be used to design more effective and specific drugs?

asked 1 day ago in Computational Chemistry by AnitaGrondin (790 points)

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Given the following half-reactions:Cu²⁺ (aq) + 2e⁻ → Cu (s) E° = +0.34 VAg⁺ (aq) + e⁻ → Ag (s) E° = +0.80 VWhat is the cell potential for the reaction when a copper electrode is paired with a silver electrode in a standard electrochemical cell?

asked 2 days ago in ElectroChemistry by VictorTuq802 (410 points)

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Determine the hybridization of the central atom in the compound XeF6.

asked 2 days ago in Inorganic Chemistry by VincentBourg (530 points)

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How can coordination chemistry principles be used to design more efficient chelating agents for the treatment of heavy metal poisoning?

asked 1 day ago in Coordination Chemistry by DianHolliday (450 points)

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Here's a question for a chemistry student to solve:How does the entropy of a system change during a non-equilibrium process, and what factors determine the direction of the process? Use specific examples from real-world systems to illustrate your answer.

asked 2 days ago in Physical Chemistry by WadeScroggin (370 points)

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Determine the heat capacity of aluminum if 50.0 g of the metal is heated from 25°C to 75°C using 100.0 J of heat energy.

asked 2 days ago in Chemical thermodynamics by ChanteCamari (610 points)

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How can coordination chemistry principles be applied to design more efficient chelating agents for the treatment of heavy metal poisoning in humans?

asked 1 day ago in Coordination Chemistry by DeborahKelso (470 points)

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Given the following electrochemical equation:Cu(s) | Cu²⁺(aq, 0.0100 M) || Cr³⁺(aq, 1.00 M) | Cr(s)At 298 K, the standard reduction potential for Cu²⁺/Cu is +0.34 V and for Cr³⁺/Cr is -0.74 V. Calculate the equilibrium constant (K) for the above electrochemical reaction.

asked 2 days ago in ElectroChemistry by ConcettaMira (500 points)

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How can computer-aided drug design be utilized to develop new treatments for autoimmune diseases, focusing specifically on the design of small-molecule inhibitors that target key immune system signaling pathways?

asked 1 day ago in Medicinal Chemistry by FelipaToombs (730 points)

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How can college chemistry courses be better designed to prepare students for chemistry-related careers, such as analytical chemistry or materials science, in order to reduce the skills gap between academic training and industry expectations?

asked 1 day ago in Chemical education by ShaunteMcKim (590 points)

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How can chemistry educators provide better support for students with learning disabilities to ensure their success in the subject?

asked 2 days ago in Chemical education by GeraldineLam (470 points)

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Here's a precise problem in biochemistry for a student to solve: How does the proofreading mechanism during DNA replication identify and correct incorrect nucleotide base pairings? Analyze the chemical interactions that occur during proofreading and how it plays a critical role in maintaining the stability and fidelity of the genetic code.

asked 2 days ago in BioChemistry by AmberConaway (730 points)

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