Recent activity by MelbaTulloch

1 answer 29 views

What is the relationship between the photoluminescence intensity of quantum dots and the size of the quantum dots, and how does this relationship vary for different types of quantum dots?

asked Feb 24 in PhotoChemistry

1 answer 31 views

What is the most efficient method for synthesizing a new adhesive that meets both high strength and low toxicity standards in chemical engineering?

asked Feb 21 in Chemical engineering

1 answer 32 views

What is the type of inorganic compound formed between magnesium and chlorine: ionic, covalent or metallic? Justify your answer with appropriate evidence.

answered Feb 20 in Inorganic Chemistry

1 answer 48 views

What is the formal charge of the nitrogen atom in the ammonium ion (NH4+)?

asked Feb 20 in Inorganic Chemistry

1 answer 28 views

What is the effect of temperature on the rate and efficiency of the reaction between magnesium and hydrochloric acid in terms of the production of hydrogen gas?

asked Feb 20 in Chemical kinetics

1 answer 45 views

How does the concentration of nitrogen and phosphorus in water bodies affect the growth of Harmful Algal Blooms (HABs) and what are the chemical processes at play?

answered Feb 19 in Environmental Chemistry

1 answer 31 views

What is the balanced chemical equation for the precipitation reaction between sodium carbonate and calcium chloride, and what is the mass of calcium carbonate that can be formed from 25 grams of sodium carbonate reacting with excess calcium chloride?

asked Feb 17 in Chemical reactions

1 answer 30 views

How does the addition of a catalyst affect the yield and molecular weight of polystyrene synthesized from styrene monomer via free radical polymerization?

asked Feb 17 in Chemical synthesis

1 answer 25 views

What is the effect of pH on the activity of the enzyme invertase in breaking down sucrose into glucose and fructose?

asked Feb 17 in BioChemistry

1 answer 36 views

What are the mechanisms of protein-protein interactions and how do they influence the formation of protein complexes? Provide specific examples of protein-protein interactions and explain the significance of these interactions in biological processes.

answered Feb 14 in BioChemistry

1 answer 40 views

How does Methionine-oxidation affect the rate of protein degradation and turnover in human cells?

asked Feb 13 in BioChemistry

1 answer 82 views

How does the ligand field splitting affect the magnetic properties of a transition metal complex and what are the factors that influence it?

asked Feb 13 in Quantum Chemistry

1 answer 82 views

How can the properties of liquid crystals be optimized to enhance the display quality of an LCD device?

answered Feb 10 in Materials Chemistry

1 answer 34 views

How can the physical and chemical properties of polyurethane be optimized by modifying the diisocyanate and polyol used in the synthesis process?

answered Feb 10 in Chemical synthesis

1 answer 29 views

How can Computational chemistry and molecular modeling be used to predict the properties of a new drug candidate?

asked Feb 6 in Physical Chemistry

1 answer 34 views

How can chemistry teachers provide adequate support for students with learning disabilities to ensure they have equal opportunities to succeed in the subject?

asked Feb 6 in Chemical education

1 answer 36 views

How can medicinal chemists design drugs to target specific mutations in genetic disorders, such as cystic fibrosis or sickle cell anemia, while avoiding off-target effects on healthy cells?

answered Feb 5 in Medicinal Chemistry

1 answer 39 views

How can chemical modification of existing anti-inflammatory drugs lead to the development of more effective treatments for inflammatory diseases?

answered Feb 4 in Medicinal Chemistry

1 answer 40 views

How can a student calculate the bond order of the N2 molecule using molecular orbital theory, and what does the calculated bond order indicate about the stability and strength of the nitrogen-nitrogen bond in the molecule?

asked Feb 4 in Chemical bonding

1 answer 74 views

Calculate the standard enthalpy change for the fusion of solid hydrogen (H₂) at its melting point of 13.81 K, given that the standard enthalpy of fusion of H₂ is 0.117 kJ/mol.

asked Feb 3 in Chemical thermodynamics

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