Recent activity by DexterTejada

1 answer 78 views

What is the relationship between the electronic structure and magnetic properties of metal-organic frameworks, and how can this be predicted using quantum chemistry methods?

asked Feb 24 in Quantum Chemistry

1 answer 84 views

What is the relationship between the structure of a metalloporphyrin or metallophthalocyanine and its reactivity towards oxygen binding?

answered Feb 24 in Coordination Chemistry

1 answer 78 views

What is the effect of reactant orientation on the reaction rate in the reaction between hydrogen and iodine?

asked Feb 22 in Chemical kinetics

1 answer 83 views

What is the enthalpy of vaporization for water at 100°C, given that its molar heat of vaporization at its boiling point is 40.7 kJ/mol?

asked Feb 20 in ThermoChemistry

1 answer 79 views

What is the effect of the structural modifications on the fluorescence properties of a specific dye molecule investigated in the literature of photochemistry of fluorescent dyes?

answered Feb 19 in PhotoChemistry

1 answer 75 views

How does the coordination chemistry of metalloenzymes contribute to their catalytic activity?

asked Feb 19 in Coordination Chemistry

1 answer 77 views

How does the coordination chemistry of metalloenzymes and metalloproteins affect their catalytic activity? Provide specific examples of metalloenzymes and metalloproteins and describe the role of the metal ion in their catalytic activity.

asked Feb 19 in Coordination Chemistry

1 answer 78 views

How can the yield of polystyrene synthesis from styrene monomer be optimized by adjusting the reaction conditions such as temperature, pressure, and catalyst concentration?

asked Feb 14 in Chemical synthesis

1 answer 89 views

What is the structural difference between ethanol and propanol as determined by nuclear magnetic resonance (NMR) spectroscopy?

asked Feb 14 in Physical Chemistry

1 answer 78 views

How does the metabolic pathway of nitrogen assimilation differ in plants and bacteria? Compare the process and the enzymes involved in both organisms.

answered Feb 14 in BioChemistry

1 answer 95 views

What are the key enzymes and biochemical pathways involved in nitrogen assimilation in plants? How do these pathways differ between different plant species and under different environmental conditions?

answered Feb 14 in BioChemistry

1 answer 146 views

How does increasing pressure affect the rate of a chemical reaction, specifically the reaction between hydrogen gas and iodine gas to form hydrogen iodide?

asked Feb 13 in Chemical kinetics

1 answer 118 views

What are the hybrid orbitals involved in the bonding of carbon atoms in ethene (C₂H₄) molecule, and what is the type of hybridization occurs in each carbon?

asked Feb 13 in Chemical bonding

1 answer 137 views

How do chlorofluorocarbons affect the concentration of ozone in the atmosphere, and what are the potential consequences of ozone depletion for human health and the environment?

asked Feb 12 in Environmental Chemistry

1 answer 86 views

How can chemistry students overcome the issue of limited access to laboratory equipment and facilities to effectively learn and apply important chemical concepts?

answered Feb 5 in Chemical education

1 answer 119 views

Determine the equilibrium constant, Kc, for the following reaction: N2(g) + O2(g) ⇌ 2NO(g) If the initial concentration of N2 is 0.50 M, O2 is 0.40 M, and NO is 0.10 M at equilibrium, what is the value of Kc?

answered Feb 4 in Chemical equilibrium

1 answer 80 views

Considering the reaction: Zn(s) + Cu2+(aq) -> Cu(s) + Zn2+(aq) What is the cell potential (in volts) at 25°C when the concentrations of [Cu2+] and [Zn2+] are 0.5 M and 1.0 M, respectively, and the zinc electrode is the anode? The standard reduction potentials for Cu2+/Cu and Zn2+/Zn are 0.34 V and -0.76 V, respectively.

asked Feb 3 in ElectroChemistry

1 answer 167 views

What is the concentration of chloride ions in a sample of seawater using potentiometry?

asked Jan 30 in Analytical Chemistry

1 answer 81 views

Using an ion-selective electrode, a student measures the concentration of chloride ions in a solution as 0.20 M. The solution also contains either nitrate or sulfate ions. How can the student determine which ion(s) is present in the solution and calculate their concentration?

asked Jan 30 in Analytical Chemistry

1 answer 82 views

Calculate the enthalpy change for the reaction: 2H2 (g) + O2 (g) → 2H2O (l) given that the standard enthalpy of formation for water is -285.8 kJ/mol, and standard enthalpies of formation of H2 (g) and O2 (g) are 0 kJ/mol.

answered Jan 23 in Chemical thermodynamics

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