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What are the regulatory mechanisms that control the utilization of glucose in the human body during periods of rest and exercise?

asked Feb 28 in BioChemistry by TheScientist (138k points)

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What is the standard enthalpy change for the reaction 2CO(g) + O2(g) → 2CO2(g) at standard conditions, given that the standard enthalpy of formation for CO, O2, and CO2 are -110.5 kJ/mol,-393.5 kJ/mol, and -393.5 kJ/mol, respectively?

asked Mar 1 in Chemical thermodynamics by TheScientist (138k points)

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What is the power output (in Watts) of an electrochemical cell at standard conditions, given that the cell potential is 1.5V and the total resistance of the circuit is 10 ohms?

asked Mar 1 in ElectroChemistry by TheScientist (138k points)

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What is the pH of a solution with a concentration of 0.1 M hydrochloric acid?

asked Mar 1 in Chemical reactions by TheScientist (138k points)

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What is the yield of 2,4-dichlorobenzoic acid formed when 10 grams of benzoic acid and excess chlorine gas are used in the synthesis, if the actual yield obtained is only 6.5 grams?

asked Mar 1 in Chemical synthesis by TheScientist (138k points)

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What is the standard Gibbs free energy change at 298 K for the reaction A + 2B → 2C if the standard Gibbs free energy of formation for A, B, and C are 100 kJ/mol, -50 kJ/mol, and -120 kJ/mol, respectively?

asked Mar 1 in Chemical thermodynamics by TheScientist (138k points)

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What is the standard free energy change for the following redox reaction at 25°C?2Fe3+(aq) + Sn2+(aq) → 2Fe2+(aq) + Sn4+(aq) Given: E°(Fe3+/Fe2+) = 0.771 V E°(Sn4+/Sn2+) = 0.150 V R = 8.314 J/K•mol F = 96,485 C/mol

asked Mar 1 in Chemical thermodynamics by TheScientist (138k points)

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What processing techniques can be used to manufacture polymer packaging products with enhanced mechanical properties and barrier properties against water vapor, oxygen, and other gases?

asked Mar 1 in Polymer Chemistry by TheScientist (138k points)

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What is the standard enthalpy of formation of methane (CH4) given the following bond dissociation energies (in kJ/mol): C-H = 413, C-C = 348, C=C = 614, C≡C = 837, H-H = 436?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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How do you design a chemical reactor to produce 10 kg/hr of product X with a yield of at least 90%, given a feed of 100 kg/hr of reactants A and B, and assuming a first-order reaction?

asked Mar 1 in Chemical engineering by TheScientist (138k points)

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What is the heat of sublimation of dry ice (CO2) when 60 grams of it is sublimated at a constant pressure of 1 atm? The initial temperature of dry ice is -78.5°C and its final temperature is -56.6°C.

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the enthalpy of dissolution of 10 grams of sodium chloride in 100 mL of water at 25°C, given that the final solution has a concentration of 1 M? (Assume that the specific heat capacity of the solution is 4.18 J/g°C)

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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How can we design an efficient treatment system for the removal of toxic heavy metals from industrial wastewater, such as lead and mercury, using chemical precipitation methods?

asked Mar 1 in Chemical engineering by TheScientist (138k points)

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What is the theoretical yield of nylon-6,6 that can be produced from the reaction of 25 grams of adipic acid and 35 grams of hexamethylenediamine? (Assuming 100% reaction efficiency)

asked Mar 1 in Chemical synthesis by TheScientist (138k points)

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What is the theoretical yield of benzocaine that can be obtained from the reaction between p-aminobenzoic acid and ethanol, assuming a 100% yield and using the stoichiometry of the reaction?

asked Mar 1 in Chemical synthesis by TheScientist (138k points)

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What is the specific heat capacity of a substance that requires 2510 J of energy to increase the temperature of a 50 g sample by 10 °C?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the step-by-step chemical process for synthesizing polyvinyl chloride from vinyl chloride monomer, and how can the purity and yield of the final product be optimized?

asked Feb 28 in Chemical synthesis by TheScientist (138k points)

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What is the theoretical yield of aspirin that can be obtained from 5 grams of salicylic acid using excess acetic anhydride in the synthesis process?

asked Mar 1 in Chemical synthesis by TheScientist (138k points)

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What is the heat of hydration for MgSO4·7H2O, given that its enthalpy change per mole of hydration is -192 kJ/mol and 10 grams of MgSO4·7H2O is dissolved in 100 grams of water at 25°C?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the rate of diffusion of oxygen in the air at standard temperature and pressure when the molecular weight of oxygen is 32 g/mol and the diffusion coefficient is 0.188 cm^2/s?

asked Mar 1 in Physical Chemistry by TheScientist (138k points)

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