Recent activity by LawrenceShel

1 answer 20 views

What is the relationship between the chemical structure of a sunscreen agent and its ability to absorb UV radiation? Compare the photochemical properties of two different classes of sunscreen agents commonly used in cosmetic products.

answered 1 day ago in PhotoChemistry

1 answer 30 views

What are the products of the reaction between sodium hydroxide and copper (II) sulfate?

answered 3 days ago in Inorganic Chemistry

1 answer 16 views

What is the effect of changing light intensity on the rate of a specific chemical reaction, and how can this be quantitatively measured using a spectrophotometer?

answered 6 days ago in Chemical kinetics

1 answer 25 views

What is the balanced chemical equation for the neutralization reaction between sulfuric acid and sodium hydroxide?

answered Feb 17 in Chemical reactions

1 answer 40 views

How can we promote and increase diversity in the chemistry field to ensure that all individuals, regardless of their race or ethnicity, have equal opportunities for success and representation in the scientific community?

answered Feb 14 in Chemical education

1 answer 37 views

What is the oxidation state of nitrogen in the compound HNO3?

answered Feb 13 in ElectroChemistry

1 answer 26 views

How can the synthesis of polyethylene terephthalate from terephthalic acid and ethylene glycol be optimized to improve the yield and purity of the final product?

answered Feb 11 in Chemical synthesis

1 answer 32 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 32 views

How can chemistry education be improved to incorporate a greater emphasis on environmental chemistry, and what are the real-world applications and impact of this knowledge in reducing environmental degradation and promoting sustainable practices?

asked Feb 4 in Chemical education

1 answer 42 views

Calculate the standard enthalpy change for the reaction: [Cu(H2O)6]2+(aq) + 2NH3(aq) → [Cu(NH3)4(H2O)2]2+(aq) + 4H2O(l)given the following information: ΔHf° [Cu(H2O)6]2+(aq) = -203.2 kJ/molΔHf° [Cu(NH3)4(H2O)2]2+(aq) = -368.5 kJ/molΔHf° H2O(l) = -285.8 kJ/molΔHf° NH3(aq) = -80.8 kJ/mol

asked Feb 3 in Chemical thermodynamics

1 answer 78 views

What is the optimal electrode material for a molecular electronics device with a specific molecular structure using density functional theory calculations?

asked Jan 31 in Computational Chemistry

1 answer 71 views

What is the bond order of the nitrogen molecule (N2) according to the molecular orbital theory?

answered Jan 30 in Chemical bonding

1 answer 99 views

How would you determine the concentration of chloride ions in a sample of seawater using an ion-selective electrode?

answered Jan 30 in Analytical Chemistry

1 answer 60 views

Calculate the formal charge of oxygen in the molecule SO2.

asked Jan 23 in Chemical bonding

1 answer 44 views

Calculate the bond order and bond length of the nitrogen-oxygen bond in the NO molecule using molecular orbital theory.

answered Jan 23 in Inorganic Chemistry

1 answer 10 views

Who is responsible for ensuring ethical treatment of animals in research?

asked Jan 20 in Psychology

1 answer 38 views

Who developed the Health Action Process Approach HAPA ?

asked Jan 20 in Psychology

1 answer 31 views

What is the cognitive-behavioural therapy by Aaron Beck?

asked Jan 17 in Psychology

1 answer 28 views

According to the critical incident stress debriefing CISD model, how does debriefing help people cope with traumatic events?

answered Jan 17 in Psychology

1 answer 34 views

When is the use of antipsychotics in the treatment of dementia-associated psychosis not recommended?

asked Jan 16 in Psychology

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