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What is the total number of electrons transferred when a current of 2.0 A flows through a solution of CuSO4 for 15 minutes? Given that the molar mass of CuSO4 is 159.61 g/mol and the Faraday constant is 96,485 C/mol.

asked Feb 13 in ElectroChemistry by ValentinaWil (2.2k points)

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What is the amount of heat required to melt 10 g of ice at 0°C, given that the heat of fusion of water is 6.01 kJ/mol?

asked Feb 13 in ThermoChemistry by JoycelynFran (2.7k points)

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What mass of sodium chloride (NaCl) would be produced from the reaction of 5.00 grams of sodium (Na) with an excess of chlorine (Cl2) gas, according to the following chemical equation: 2Na + Cl2 → 2NaCl

asked Feb 13 in Chemical reactions by AdeleChauvel (1.8k points)

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What is the percent ionization of a 0.1 M solution of acetic acid (pKa = 4.76) at 25°C, if its ionization constant (Ka) changes to 1.32 x 10^-5 when the temperature is raised to 50°C?

asked Feb 13 in Chemical equilibrium by MichaelBirds (2.0k points)

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What is the heat released when 25 grams of sodium hydroxide (NaOH) crystallizes out of a solution at its freezing point, given the enthalpy of fusion of NaOH is -44.51 kJ/mol? (Molar mass of NaOH = 40.00 g/mol)

asked Feb 13 in ThermoChemistry by AntonioDaven (1.7k points)

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What is the enthalpy change when 10.0 g of sodium hydroxide dissolves in 200 mL of water at 25°C? The molar enthalpy of dissolution of sodium hydroxide is -44.5 kJ/mol.

asked Feb 13 in ThermoChemistry by JodieBaskett (1.8k points)

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How many kJ of heat are released when 2.5 g of octane undergo complete combustion according to the reaction:$$C_8H_{18} + 12.5 O_2 \rightarrow 8 CO_2 + 9 H_2O$$Given: Enthalpy of combustion of octane = -5,470 kJ/mol.

asked Feb 13 in ThermoChemistry by DillonLeight (1.6k points)

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What is the amount of heat released when 5 grams of NaCl is crystallized from its aqueous solution at 25°C, and the final temperature of the solution is -5°C? (Given: Heat of crystallization of NaCl = -3.92 kJ/mol)

asked Feb 13 in ThermoChemistry by MarciaBrooke (1.8k points)

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What is the heat of hydration of magnesium sulfate, MgSO4, when 45 grams of the anhydrous salt is dissolved in 250 mL of water? The molar heat of hydration of MgSO4 is -138.5 kJ/mol.

asked Feb 13 in ThermoChemistry by Miguel37A006 (2.3k points)

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What mass of CO2 will be produced when 12.5 grams of methane (CH4) reacts with 50.0 grams of oxygen (O2) according to the following balanced equation:CH4 + 2O2 → CO2 + 2H2O Identify the limiting reactant and calculate the mass of CO2 produced.

asked Feb 13 in Chemical reactions by KelleS495456 (1.9k points)

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How does the presence of fine particulate matter in the air contribute to the development of respiratory illnesses such as asthma and bronchitis in humans, and what chemical properties of these particles make them harmful to human health?

asked Feb 13 in Environmental Chemistry by Anglea937174 (1.9k points)

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What is the effect of fiber orientation on the mechanical properties of carbon fiber-reinforced polymer composites used in the aerospace industry?

asked Feb 13 in Polymer Chemistry by Vern5918460 (2.5k points)

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What is the predicted reactivity of the transition metal compound Fe2O3, based on its electronic configuration?

asked Feb 13 in Inorganic Chemistry by KyleSchlemme (2.1k points)

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1 answer 49 views

What is the magnetic moment of Fe(CO)₅ in the gas phase? Calculate the magnetic moment and identify its configuration.

asked Feb 13 in Inorganic Chemistry by AddieFrayne (1.7k points)

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1 answer 33 views

What is the electronic structure and bond order of the Fe(CO)5 molecule, and how does it relate to its observed vibrational modes and infrared spectrum?

asked Feb 13 in Computational Chemistry by AshleighTheo (1.8k points)

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What is the process of fatty acid oxidation, and how is it relevant to lipid signaling and metabolism in human cells?

asked Feb 13 in BioChemistry by VanBohannon (1.7k points)

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How does the rate of fatty acid oxidation change in a cell when the concentration of coenzyme A decreases?

asked Feb 13 in BioChemistry by KaraGass5143 (2.3k points)

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What methods and equipment can be used for the extrusion of a specific polymer, and how can the extrusion conditions be optimized to achieve the desired properties of the final product?

asked Feb 13 in Polymer Chemistry by CalvinHornin (1.6k points)

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How does the exposure to pesticide residues in fruits and vegetables affect the concentration of organophosphate metabolites in children's urine samples?

asked Feb 13 in Environmental Chemistry by UnaHolt18437 (1.7k points)

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How does exposure to particulate matter in polluted air affect human respiratory health in terms of lung function and risk of respiratory diseases such as asthma and lung cancer?

asked Feb 13 in Environmental Chemistry by FaustinoBon9 (2.0k points)

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