Recent activity by SergioCrews1

1 answer 24 views

What is the mechanism of the photochemical reaction that occurs between benzene and chlorine gas to form chlorobenzene in the presence of sunlight?

answered Feb 22 in PhotoChemistry

1 answer 31 views

What is the lattice energy of NaCl? Given: The ionic radius of Na+ is 0.98 Å, the ionic radius of Cl- is 1.81 Å, and the lattice energy of NaCl is -787.3 kJ/mol.

answered Feb 20 in Inorganic Chemistry

1 answer 36 views

What is the effect of changing the pH levels (acidic, neutral, basic) on the rate of the photochemical reaction between a photosensitive molecule and light, and how does this relate to the chemical mechanism?

asked Feb 19 in PhotoChemistry

1 answer 30 views

How does the degree of crystallinity of a polymer affect its mechanical properties?

asked Feb 19 in Polymer Chemistry

1 answer 53 views

How does the concentration and type of pesticide residue found in commonly consumed fruits and vegetables vary across different regions of the world, and how does this impact human health in those areas?

answered Feb 18 in Environmental Chemistry

1 answer 40 views

How does the chemical structure of a drug affect its toxicity, and can existing drugs be modified to reduce their toxicity while maintaining their therapeutic efficacy?

asked Feb 18 in Medicinal Chemistry

1 answer 36 views

What is the bond energy of a C-H bond in methane (CH4)?

answered Feb 18 in Chemical reactions

1 answer 35 views

How does the binding of a small molecule inhibitor affect the conformational dynamics of a protein target, as revealed by molecular dynamics simulations?

asked Feb 17 in Computational Chemistry

1 answer 58 views

What is the role of hydrogen bonding in maintaining the stability of the double helix structure of DNA? How does the chemical structure of nucleotide bases allow for complementary base pairing and formation of base pairs?

asked Feb 13 in BioChemistry

1 answer 131 views

How does genetic variation influence drug response and efficacy in patients with cancer? Specifically, investigate the relationship between genetic markers and the response to chemotherapy drugs used in cancer treatment.

answered Feb 13 in Medicinal Chemistry

1 answer 72 views

What are the photochemical properties of cisplatin complex and how do they impact the effectiveness of the drug in cancer treatment?

asked Feb 12 in PhotoChemistry

1 answer 37 views

How can the knowledge of structure-activity relationship be utilized in the design and development of new drugs to treat cardiovascular diseases, such as heart failure, hypertension and angina pectoris?

answered Feb 7 in Medicinal Chemistry

1 answer 33 views

How can the efficiency of a cosmetic production system be improved through the design of a more stable emulsion base?

answered Feb 7 in Chemical engineering

1 answer 35 views

How can molecular docking simulations be used to predict the strength and specificity of protein-protein interactions, and how can this information be used to design novel therapies that target these interactions?

answered Feb 6 in Computational Chemistry

1 answer 80 views

Calculate the standard molar enthalpy change for the following reaction using quantum chemistry and compare it with the literature value: 2H2(g) + O2(g) -> 2H2O(g) Literature Value: -572 kJ/mol

answered Feb 3 in Quantum Chemistry

1 answer 48 views

How can we determine the concentration of caffeine in a sample of coffee using liquid chromatography, and how can we optimize the chromatographic conditions to obtain the most accurate results?

answered Jan 29 in Analytical Chemistry

1 answer 69 views

How can the concentration of a substance be determined quantitatively in a sample by using polarography? Discuss the experimental setup, mechanism, and factors affecting the results. Provide a practical example of using polarography to determine the concentration of a particular substance in a given sample.

answered Jan 29 in Analytical Chemistry

1 answer 71 views

Calculate the corrosion potential of iron (Fe) in a 0.1 M HCl solution at 25°C, given that the standard electrode potential for the Fe2+/Fe redox couple is -0.44 V and the standard hydrogen electrode potential at the same temperature and pressure is 0 V. What is the likelihood of iron corrosion in this environment?

answered Jan 23 in ElectroChemistry

1 answer 63 views

A student is given a lead-acid battery, which has a standard reduction potential of -0.356 V. The battery is undergoing a reaction where Pb(s) + SO4^2-(aq) -> PbSO4(s) + 2e^-. If the concentration of PbSO4 in the anode compartment is 1.15 M and the concentration of PbSO4 in the cathode compartment is 0.55 M, what is the power output of the battery, assuming it has a current of 1.25 A?

asked Jan 22 in ElectroChemistry

1 answer 40 views

A sample of a compound contains 28.6% sodium, 46.8% sulfur, and 24.6% oxygen. Determine the empirical formula of this inorganic compound.

answered Jan 22 in Inorganic Chemistry

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