Recent activity by Diana66S829

1 answer 75 views

What is the environmental impact of a new industrial project that involves the production of a chemical that is known for its toxicity to aquatic organisms? How can the project be modified to minimize its impact on the environment?

answered Feb 20 in Environmental Chemistry

1 answer 86 views

How much energy is required to activate a chemical reaction with a rate constant of 2.5x10^-3 s^-1 if the activation energy is 50 kJ/mol?

answered Feb 20 in Chemical reactions

1 answer 80 views

How does the coordination environment of metal ions in metalloenzymes and metalloproteins affect their catalytic activity? Provide examples of metalloproteins and their metal binding sites to support your answer.

asked Feb 19 in Coordination Chemistry

1 answer 85 views

How many ATP molecules are generated from the complete oxidation of one glucose molecule through the Citric acid cycle and oxidative phosphorylation?

answered Feb 18 in BioChemistry

1 answer 82 views

What is the activation energy of the reaction between hydrogen peroxide and iodide ions, given that the rate constant at 25°C is 4.5 x 10^-4 s^-1 and the activation energy is 75 kJ/mol?

answered Feb 17 in Chemical kinetics

1 answer 83 views

How does the acidity of phenols differ from that of alcohols and what is the reason behind it? Provide a rationale for your answer.

asked Feb 17 in Organic Chemistry

1 answer 90 views

How do surface chemistry principles affect the taste and quality of tea during its processing?

answered Feb 17 in Surface Chemistry

1 answer 77 views

How does surface chemistry influence the stability and shelf life of emulsions used in the production of food and beverage products, and how can this knowledge be applied to optimize emulsion formulations in the industry?

answered Feb 17 in Surface Chemistry

1 answer 88 views

How can we predict the electronic and magnetic properties of specific metal-organic frameworks and their potential applications in catalysis, energy storage, and gas separation?

asked Feb 14 in Quantum Chemistry

1 answer 132 views

Design a continuous stirred-tank reactor (CSTR) for the exothermic reaction of A + B → C with a rate constant of 0.05 L/mol/min. The reactor should produce a minimum of 500 g of C per minute, while maintaining a conversion of at least 90%. The feedstream of A and B is available with a flow rate of 2 L/min and an initial concentration of 1 M for both reactants. The reactor should be operated at a temperature of 50°C and a pressure of 1 atm. What should be the volume of the CSTR and the flow rate of the cooling medium used to maintain the desired temperature?

asked Feb 3 in Chemical engineering

1 answer 153 views

What is the coordination geometry and metal coordination number in the active site of the metalloenzyme carbonic anhydrase? How does the coordination environment of the metal ion contribute to the enzyme's catalytic activity?

asked Jan 31 in Coordination Chemistry

1 answer 123 views

How does the dipole moment of a water molecule change when it is replaced by a sulfur hexafluoride molecule, as determined by ab initio calculations?

answered Jan 31 in Computational Chemistry

1 answer 174 views

What is the concentration of iron (II) ions in a water sample with absorbance of 0.295 at a wavelength of 510 nm, given that the molar extinction coefficient of iron (II) ions is 11,300 M^-1cm^-1 at this wavelength? Use colorimetry to determine the solution.

asked Jan 30 in Analytical Chemistry

1 answer 130 views

How can X-ray fluorescence spectroscopy be used to identify the presence of specific elements in a heterogeneous sample and what are the potential sources of error in this analytical method?

asked Jan 30 in Analytical Chemistry

1 answer 82 views

Calculate the enthalpy of oxidation for the reaction of 2 moles of magnesium (Mg) with 1 mole of oxygen gas (O2) under standard conditions. Given the standard enthalpy of formation (ΔH°f) of MgO is -601.8 kJ/mol.

answered Jan 23 in ThermoChemistry

1 answer 131 views

How does the oxidation state of the carbon atom change in the reaction of ethanol with acidified potassium dichromate?

answered Jan 21 in Organic Chemistry

1 answer 70 views

What are some applications of discursive psychology?

answered Jan 20 in Psychology

1 answer 92 views

Compare and contrast the Rogerian and Beckian approaches to therapy.

asked Jan 20 in Psychology

1 answer 60 views

Why is peer-review important in psychology research?

answered Jan 20 in Psychology

1 answer 102 views

According to the Heuristic-Systematic Model, what are the two routes to persuasion?

answered Jan 17 in Psychology

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