Recent activity by EmileR968610

1 answer 29 views

How do the photochemical properties of photosensitive materials used in photography affect the quality and durability of photographs?

answered Feb 22 in PhotoChemistry

1 answer 32 views

How does the pH level of water affect the survival and growth of aquatic organisms in polluted waters?

answered Feb 22 in Environmental Chemistry

1 answer 26 views

What is the optimum temperature and pressure required for the synthesis of polyethylene from ethylene monomer using Ziegler-Natta catalysis?

asked Feb 22 in Chemical synthesis

1 answer 27 views

How does the folding of a protein determine its function and how do different environmental factors affect protein folding?

asked Feb 20 in BioChemistry

1 answer 32 views

What is the coordination geometry of metal ion in hemoglobin protein?

asked Feb 19 in Coordination Chemistry

1 answer 30 views

How does temperature affect the reaction rate of methane and chlorine in the gas phase, and what are the optimized conditions for achieving a high yield of chloromethane using Monte Carlo simulations?

answered Feb 17 in Computational Chemistry

1 answer 32 views

What is the mechanism behind the enhancement of Raman signals in Surface-enhanced Raman spectroscopy (SERS) and how can it be utilized for the detection and quantification of trace amounts of chemical compounds?

answered Feb 17 in Surface Chemistry

1 answer 40 views

What are the specific economic benefits of studying chemistry and how can this knowledge be effectively applied to address current societal challenges such as climate change and resource depletion?

answered Feb 14 in Chemical education

1 answer 60 views

What type of bonding is present in a sample of magnesium oxide (MgO)? Is it ionic, covalent, or metallic? Justify your answer with evidence and explain the characteristics of this type of bonding that are exhibited in this compound.

asked Feb 13 in Chemical bonding

1 answer 76 views

What is the hybridization of the central atom in sulfur hexafluoride (SF6)?

asked Feb 13 in Inorganic Chemistry

1 answer 63 views

What is the effect of changing the concentration of the reactants on the overall rate of a first-order chemical reaction? Provide experimental evidence to support your answer.

asked Feb 13 in Chemical kinetics

1 answer 41 views

How can we design drugs that specifically target the angiotensin converting enzyme (ACE) for the treatment of hypertension?

answered Feb 12 in Medicinal Chemistry

1 answer 38 views

How can the synthesis of high molecular weight polyacrylonitrile from acrylonitrile monomer be optimized to achieve maximum yield and desired properties such as thermal stability and mechanical strength?

asked Feb 11 in Chemical synthesis

1 answer 65 views

How can the stability of an emulsion be affected by factors such as temperature, pH, and the addition of emulsifiers, and what are the mechanisms behind these effects?

answered Feb 10 in Surface Chemistry

1 answer 34 views

How can the design of a hydrogen fuel production system be optimized to increase efficiency and reduce costs while minimizing environmental impact?

answered Feb 6 in Chemical engineering

1 answer 60 views

How can the chemical properties of liquid crystals be optimized to enhance their performance in display technology, particularly in terms of brightness, contrast, and response time?

answered Feb 6 in Materials Chemistry

1 answer 38 views

How can chemistry students carry out hands-on experiments at home or in a limited-resource school setting with limited access to laboratory equipment and chemicals?

answered Feb 4 in Chemical education

1 answer 81 views

Design a chemical reactor that can efficiently convert 100 kg/hr of propane gas to propylene gas at a temperature of 500°C and a pressure of 2 atm. The desired conversion rate is 90%, while minimizing the production of unwanted byproducts. The reactor must also be safe and economically feasible, with a maximum capital cost of $1.5 million and a minimum expected lifetime of 10 years. What type of reactor, catalyst, and operating conditions would you recommend and why?

answered Feb 3 in Chemical engineering

1 answer 45 views

Calculate the standard enthalpy of formation for carbon dioxide (CO2) given the following information: ΔHf° of CO = -26.4 kJ/mol, ΔHf° of O2 = 0 kJ/mol, and ΔH°rxn for the combustion of carbon to form CO2 is -393.5 kJ/mol.

asked Feb 3 in Chemical thermodynamics

1 answer 56 views

Calculate the standard enthalpy of formation (ΔH°f) of carbon dioxide (CO2) at 25°C given the following data:CO(g) + 1/2 O2(g) → CO2(g) ΔH° = -283.3 kJ/molC(s) + O2(g) → CO2(g) ΔH° = -393.5 kJ/molΔH°f (C(s)) = 0 kJ/molΔH°f (O2(g)) = 0 kJ/mol

asked Feb 3 in ThermoChemistry

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