Recent activity by RondaSkeyhil

1 answer 33 views

How does the polarity of the solvent affect the rate of photochemical reactions for a specific photosensitive compound?

1 answer 32 views

What are the main environmental contaminants that can arise from the use and disposal of common household chemicals, and what impact do these contaminants have on the environment and human health?

asked Feb 20 in Chemical education

1 answer 32 views

What is the effect of temperature and size on the stability and dynamics of gold nanoparticles using molecular dynamics simulations?

asked Feb 19 in Computational Chemistry

1 answer 31 views

What is the coordination environment and electronic structure of the iron atom in the heme group of hemoglobin? How does this structure allow hemoglobin to bind oxygen and transport it throughout the body?

asked Feb 19 in Coordination Chemistry

1 answer 29 views

What is the effect of the addition of dopants to the superconducting material YBa2Cu3O7 on its critical temperature?

asked Feb 17 in Materials Chemistry

1 answer 38 views

What is the difference between size exclusion chromatography and gel permeation chromatography as methods for polymer characterization? Which one is better-suited for determining the molecular weight distribution of a polymer sample? Justify your answer.

asked Feb 14 in Polymer Chemistry

1 answer 27 views

How can we design a drug that specifically targets the cancer cells in a patient with lung cancer without negatively affecting healthy cells?

asked Feb 12 in Medicinal Chemistry

1 answer 40 views

How can the process of designing a system for the production of surfactants be optimized to increase efficiency and reduce costs in chemical engineering?

answered Feb 10 in Chemical engineering

1 answer 44 views

How can the integration of environmental chemistry into the existing curriculum of a chemistry syllabus enhance students' understanding of the impact of chemical reactions on the environment and promote responsible use of chemicals in their future careers?

asked Feb 7 in Chemical education

1 answer 37 views

How can the electronic properties of semiconductors be modified to optimize their performance as electronic devices, and what is the most effective method for achieving this modification?

asked Feb 7 in Materials Chemistry

1 answer 102 views

What alternative strategies can be employed to provide meaningful chemistry laboratory experiences for students in environments with limited resources and funding for hands-on experimentation?

asked Jan 30 in Chemical education

1 answer 65 views

Calculate the melting point of sodium chloride (NaCl) given that its enthalpy of fusion is 28.9 kJ/mol and its entropy of fusion is 41.3 J/K/mol.

answered Jan 23 in Inorganic Chemistry

1 answer 75 views

Calculate the change in entropy (in J/K) for the following reaction at 298 K: 2CH3OH (l) + 3O2 (g) → 2CO2 (g) + 4H2O (l) Given the following standard entropy values (in J/K): CH3OH (l): 126.6, O2 (g): 205.0, CO2 (g): 213.6, H2O (l): 69.9

asked Jan 23 in Chemical thermodynamics

1 answer 81 views

A chemist analyzed a sample of unknown substance and found that it contains 55% carbon, 9.17% of hydrogen and the rest of the mass is oxygen. What is the percentage by mass of oxygen in the sample?

answered Jan 22 in Analytical Chemistry

1 answer 79 views

How can positive psychology be used to promote physical health?

asked Jan 20 in Psychology

1 answer 162 views

When working with communities, what is the term for the knowledge and skills that are unique to a particular group?

answered Jan 17 in Psychology

1 answer 58 views

Who developed the operant model of pain?

answered Jan 16 in Psychology

1 answer 150 views

When was the development of cross-cultural psychology?

asked Jan 16 in Psychology

1 answer 42 views

When evaluating organisational psychology theories, what are the potential biases that need to be considered?

answered Jan 16 in Psychology

1 answer 136 views

What is the difference between the transactional and transformational approach to leadership?

asked Jan 16 in Psychology

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