Recent activity by MargheritaAn

1 answer 79 views

How does the presence of sulfide minerals in acid mine drainage affect the pH and metal concentration of surface water in the surrounding area?

asked Feb 22 in Environmental Chemistry

1 answer 76 views

What is the most effective analytical method to determine pesticide residues in food samples and how do these residues affect human health over a long period of time?

answered Feb 21 in Environmental Chemistry

1 answer 85 views

What is the effect of the size and shape of metal nanoparticles on the catalytic activity of hydrazine decomposition reaction using Density functional theory calculations?

answered Feb 20 in Computational Chemistry

1 answer 84 views

How does the coordination environment around the metal ion in a metalloenzyme affect its catalytic activity towards a specific substrate? Provide a detailed analysis of the coordination chemistry of at least one metalloenzyme and its role in catalysis.

answered Feb 19 in Coordination Chemistry

1 answer 82 views

What is the balanced chemical equation for the synthesis of water from oxygen and hydrogen gas at standard conditions?

asked Feb 17 in Chemical reactions

1 answer 91 views

How does the addition of natural additives (such as cornstarch or potato starch) affect the mechanical and barrier properties of polymer-based packaging materials, and what is the environmental impact of using these additives?

asked Feb 17 in Polymer Chemistry

1 answer 168 views

How does the inadequate emphasis on chemical reactions and equations affect a chemistry student's understanding of chemical education?

asked Feb 13 in Chemical education

1 answer 142 views

How does the heavy metal contamination of soil, specifically lead and cadmium, impact the growth and yield of spinach plants?

answered Feb 13 in Environmental Chemistry

1 answer 149 views

How do excited state dynamics vary across different molecules, and how can ab initio calculations aid in predicting these dynamics?

answered Feb 13 in Computational Chemistry

1 answer 71 views

How can the photochemical properties of fluorescent dyes be utilized to study biological systems and what are the considerations that need to be made when selecting a fluorescent dye for a particular application in photochemistry?

answered Feb 10 in PhotoChemistry

1 answer 98 views

How can the lack of emphasis on safety protocols in chemistry labs affect the physical and mental well-being of students, and what can be done to address and prevent any potential hazards?

answered Feb 7 in Chemical education

1 answer 90 views

How can the efficiency of the hydrogen fuel production system be improved without compromising the quality and purity of the final product?

asked Feb 7 in Chemical engineering

1 answer 80 views

How can chemistry teachers or institutions provide adequate and effective hands-on experimentation opportunities for students, despite limited resources and equipment?

asked Feb 6 in Chemical education

1 answer 89 views

How can molecular docking studies of a potential drug candidate be used to optimize its binding affinity and selectivity to the target protein, leading to a more effective drug for therapeutic purposes?

answered Feb 5 in Computational Chemistry

1 answer 119 views

Design a heat exchanger for a specific process that involves heating a liquid from 20°C to 60°C. The liquid has a flow rate of 500 L/hr, and it will be heated by steam at a pressure of 3 bar. The heat transfer coefficient for the steam is 3000 W/(m²·K), and the overall heat transfer coefficient for the heat exchanger is 500 W/(m²·K). Determine the surface area required for the heat exchanger and the flow rate of steam required to heat the liquid.

answered Feb 4 in Chemical engineering

1 answer 118 views

What is the dipole moment of carbon dioxide?

answered Jan 31 in Chemical bonding

1 answer 129 views

What is the percentage composition of proteins in a sample of blood serum using electrophoresis?

asked Jan 31 in Analytical Chemistry

1 answer 126 views

What are the most effective strategies for overcoming difficulty in understanding complex chemical concepts, and how can they be applied to your current study of chemistry?

answered Jan 30 in Chemical education

1 answer 89 views

Calculate the enthalpy change of oxidation for the combustion of 1 mole of ethane gas (C₂H₆) in oxygen gas (O₂) to form carbon dioxide gas (CO₂) and water vapor (H₂O), given the following enthalpies of formation: ΔHf(C₂H₆) = -84.7 kJ/mol, ΔHf(CO₂) = -393.5 kJ/mol, ΔHf(H₂O) = -241.8 kJ/mol.

answered Jan 23 in ThermoChemistry

1 answer 134 views

According to the social learning theory, what is vicarious reinforcement?

asked Jan 20 in Psychology

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