Recent activity by LucilleWhite

1 answer 24 views

How does the pH level of water affect the survival of aquatic plants and animals in polluted water bodies?

asked 3 days ago in Environmental Chemistry

1 answer 21 views

What are the resonance structures of the nitrate ion (NO3⁻) and how do they explain why all three oxygen atoms form equal bonds with the nitrogen atom?

asked 3 days ago in Chemical bonding

1 answer 14 views

What is the molecular geometry and bond angles of NH3 molecule and how does it affect its polarity and reactivity in chemical reactions?

answered 3 days ago in Quantum Chemistry

1 answer 19 views

How does the modification of amino acid side chains affect the degradation and turnover of proteins? Provide examples of such modifications and their impact on protein degradation machinery.

asked 4 days ago in BioChemistry

1 answer 30 views

What is the mechanism involved in the long-range transportation of POPs and their subsequent deposition in remote locations, and how does this contribute to the persistence of POPs in the environment?

asked 4 days ago in Environmental Chemistry

1 answer 27 views

What is the effect on the formation of a complex ion containing iron(III) and thiocyanate when the pH is changed from acidic to neutral conditions?

asked 5 days ago in Chemical equilibrium

1 answer 30 views

How does the concentration of reactants and products at equilibrium affect the rate of a chemical reaction, and how can we experimentally investigate this effect?

asked 6 days ago in Chemical kinetics

1 answer 34 views

How does the concentration and nature of the protein affect its adsorption on solid surfaces? Provide experimental evidence to support your answer.

asked Feb 17 in Surface Chemistry

1 answer 27 views

What is the difference in coordination behavior between metalloporphyrins and metallophthalocyanines in complex formation with transition metals?

answered Feb 13 in Coordination Chemistry

1 answer 45 views

Which type of inorganic solid is KCl, NaCl and MgO? Ionic, covalent or metallic? Provide a brief explanation for your answer.

answered Feb 13 in Inorganic Chemistry

1 answer 38 views

What is the synthetic route for the production of ibuprofen starting from benzene? Draw the retrosynthesis to show the steps required to obtain the final molecule.

asked Feb 13 in Organic Chemistry

1 answer 3 views

How can we design drugs that target specific genetic mutations responsible for genetic disorders?

answered Feb 12 in Medicinal Chemistry

1 answer 44 views

How can the size and shape of metal nanoparticles be controlled using various synthesis methods and how does this affect their physical and chemical properties?

answered Feb 10 in Materials Chemistry

1 answer 32 views

How can the efficiency of the process for the production of food additives by chemical engineering be improved without compromising the quality and safety of the end product?

asked Feb 7 in Chemical engineering

1 answer 33 views

How can molecular dynamics simulations be used to predict the folding pathway and stability of a specific protein?

asked Feb 5 in Computational Chemistry

1 answer 33 views

How can a student adequately prepare for a chemistry exam, specifically in the areas of stoichiometry and balancing chemical equations? Provide examples and strategies for improving understanding and retention of these concepts.

answered Feb 4 in Chemical education

1 answer 56 views

What is the concentration of a solution of iron(II) sulfate if its absorbance at a wavelength of 495 nm is 0.456 in a 1 cm cuvette with a path length of 1 cm? The molar absorptivity of iron(II) sulfate at 495 nm is 8100 L/mol·cm. The molecular weight of iron(II) sulfate is 151.91 g/mol.

answered Jan 30 in Analytical Chemistry

1 answer 76 views

Suppose you are given a sample containing an unknown concentration of copper ions. Using colorimetry, how would you determine the concentration of copper ions in the sample? Provide a step-by-step procedure and explain the principles behind each step.

asked Jan 30 in Analytical Chemistry

1 answer 57 views

Calculate the equilibrium constant, Ka, for the dissociation of a weak acid HA with an initial concentration of 0.10 M that ionizes to form H+ and A-. At equilibrium, the concentration of H+ is found to be 1.0 x 10^-5 M and the concentration of A- is 0.09 M.

answered Jan 23 in Chemical equilibrium

1 answer 59 views

Calculate the corrosion potential of copper in a galvanic couple with a standard hydrogen electrode at 298 K, given that the standard electrode potential of copper is +0.34 V and the standard electrode potential of hydrogen is 0 V.

answered Jan 23 in ElectroChemistry

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