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What is the rate of polymerization of vinyl acetate if the initial concentration of initiator is 0.05 mol/L, the rate constant at the polymerization temperature is 0.04 s^-1, and the reaction temperature is 60°C?

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

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How does the zeta potential affect the stability of colloidal systems, and how can it be measured experimentally?

asked Feb 28 in Surface Chemistry by TheScientist (138k points)

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How can we design and synthesize polymer-based optical materials with high refractive index and low optical scattering for use in optical devices such as lenses and waveguides?

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

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What is the surface area of a sample of activated carbon with a BET (Brunauer-Emmett-Teller) surface area of 500 m²/g, if 5 g of the sample is used in the experiment?

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

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What is the phase diagram of a binary mixture composed of X and Y at constant temperature and varying pressure? Specifically, determine the critical points and plot the equilibrium curves for solid-liquid and liquid-vapor phases.

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

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How can we modify the synthesis methods for carbon nanotubes to achieve a higher purity and better control of the nanotube structures?

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

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What is the standard enthalpy change for the reaction 2NO(g) + O2(g) ⟶ 2NO2(g) , given that the standard enthalpy of formation of NO(g), O2(g) and NO2(g) are 90.4 kJ/mol , 0 kJ/mol, and 33.2 kJ/mol, respectively?

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

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What is the mass of copper deposited on the cathode when a current of 5 A is passed through a solution of copper (II) sulfate for 2 hours? Given that the atomic mass of copper is 63.5 g/mol and the Faraday constant is 96485 C/mol.

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

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How can we design antiviral drugs that specifically target the replication process of the influenza virus without affecting the replication of other viruses?

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

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What is the theoretical amount of heat required to desorb 5 grams of CO2 adsorbed on activated carbon if the enthalpy change for this process is -25 kJ/mol? (Assume complete desorption of CO2)

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

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What is the yield of 2,4-dinitrophenylhydrazine obtained from the reaction of hydrazine and 2,4-dinitrochlorobenzene if 5 grams of hydrazine and 7 grams of 2,4-dinitrochlorobenzene are used and the resulting product weighs 4.5 grams?

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

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What is the standard enthalpy change for the reaction between 50 mL of 0.1 M HCl(aq) and 50 mL of 0.1 M NaOH(aq) at 25°C, given that the resulting solution has a density of 1.05 g/mL and a heat capacity of 4.184 J/goC?

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 298K?Cr2O7(2-) + 14H(+) + 6e(-) → 2Cr(3+) + 7H2O(l)Given: E°(Cr2O7(2-)/Cr(3+)) = 1.33 V and E°(H2O/O2) = -0.82 V.

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

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What is the vibrational frequency and the infrared spectrum of a water molecule (H2O) in its ground state using the harmonic oscillator model?

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

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How to design an efficient system for the production of surfactants that meets the required chemical properties and manufacturing standards while minimizing environmental impact and maintaining cost-effectiveness?

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

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How can we create more engaging and interactive chemistry demonstrations that appeal to students and increase their interest in the subject?

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

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How can we design a system that ensures the production of cosmetics with consistent quality, while minimizing the use of chemical additives that can be harmful to consumers and the environment?

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

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What is the mass of copper deposited on a cathode when a current of 5A is applied for 1 hour in a copper sulfate solution with a concentration of 0.5M? (Molar Mass of Cu: 63.55 g/mol and Faraday's constant: 96,485 C/mol)

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

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What is the pH of a solution that contains 0.02 moles of hydrochloric acid in 500 mL of water?

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

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How can we use computational methods to design new drug molecules that could effectively treat respiratory diseases such as asthma, chronic obstructive pulmonary disease (COPD) or cystic fibrosis?

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

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