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0
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15
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What is the most efficient method for synthesizing 2,4,6-trinitrotoluene from toluene and nitric acid with high yield and purity, while minimizing any potential environmental hazards?
answered
3 days
ago
in
Chemical synthesis
0
votes
30
views
What is the most effective polymer-based membrane material for removing heavy metals from industrial wastewater in water treatment processes?
answered
3 days
ago
in
Polymer Chemistry
0
votes
5
views
What is the most effective method for the analysis and detection of pesticide residues in food samples and how can this information be used to minimize the impact of these residues on human health?
answered
4 days
ago
in
Environmental Chemistry
0
votes
27
views
How does the type and size of nanomaterials affect the enhancement factor in Surface-enhanced Raman spectroscopy (SERS)?
answered
5 days
ago
in
Surface Chemistry
0
votes
35
views
What is the effect on the solubility of AgCl in water if the concentration of NaCl is increased? Calculate the new solubility of AgCl when the concentration of NaCl is increased from 0.1 M to 0.3 M. Given that the Ksp of AgCl is 1.77 x 10^-10.
answered
5 days
ago
in
Chemical equilibrium
0
votes
16
views
What is the critical micelle concentration of sodium dodecyl sulfate in water at 25°C? Provide a detailed explanation supported by experimental data.
answered
6 days
ago
in
Surface Chemistry
0
votes
28
views
How does the chemical structure of phosphorescent materials affect their photochemical properties such as lifetime, quantum yield, and emission spectrum?
answered
6 days
ago
in
PhotoChemistry
0
votes
7
views
How does surface tension of a liquid vary with temperature and impurity concentration, and how can it be measured accurately using a drop weight or capillary rise method?
answered
Feb 17
in
Surface Chemistry
0
votes
7
views
What is the general mechanism of photochemical reactions in organic compounds? Provide examples of such reactions and explain how the energy from light is translated into chemical changes within the molecule.
answered
Feb 14
in
PhotoChemistry
0
votes
49
views
How does inadequate training for chemistry teachers affect students' understanding and interest in the subject?
answered
Feb 13
in
Chemical education
0
votes
42
views
How effective have the environmental regulations been in mitigating the pollution generated by the manufacturing industries?
answered
Feb 13
in
Environmental Chemistry
0
votes
9
views
How can we design a drug to target a specific genetic mutation in a patient with Huntington's disease? What chemical properties and interactions should be considered in the designing of such a drug?
answered
Feb 12
in
Medicinal Chemistry
0
votes
35
views
How can the efficiency of the surfactant production process be improved by optimizing the operating parameters such as temperature, pH, and concentration of reactants in a designed production system?
answered
Feb 7
in
Chemical engineering
0
votes
38
views
How can computational chemistry and molecular modeling be used to simulate the behavior of chemical compounds in different environments, and how can these simulations be validated experimentally?
answered
Feb 5
in
Physical Chemistry
0
votes
43
views
Design a chemical reactor system with a specific volume and flow rate for the production of 100 kg/hr of ammonia from hydrogen and nitrogen gases using the Haber-Bosch process. The reactor temperature should be maintained at 450°C and a pressure of 200 atm. The reactor should also have a 90% conversion rate of reactants to meet the required production rate. Determine the dimensions of the reactor and the amount of catalyst needed for this process.
answered
Feb 3
in
Chemical engineering
0
votes
53
views
Calculate the standard enthalpy change for the combustion of methane (CH4) at constant pressure, given that the standard enthalpies of formation are -74.87 kJ/mol for methane and -393.51 kJ/mol for carbon dioxide (CO2), and 2H2(g) + O2(g) → 2H2O(l) has a standard enthalpy change of -571.66 kJ/mol.
answered
Feb 3
in
Chemical thermodynamics
0
votes
56
views
What is the molecular structure and bonding in a water molecule and how do they contribute to the molecule's various properties, such as its polarity and ability to form hydrogen bonds with other molecules?
answered
Jan 30
in
Chemical education
0
votes
78
views
How can we encourage and support underrepresented minority students to pursue careers in chemistry and promote diversity in the chemistry field?
answered
Jan 30
in
Chemical education
0
votes
48
views
Calculate the enthalpy change (in kJ/mol) for the isomerization reaction of butene-1 to butene-2. Given the standard enthalpy of formation values for butene-1 as -126.3 kJ/mol and butene-2 as -126.0 kJ/mol, and the heat of combustion values for butene-1 as -2670.0 kJ/mol and butene-2 as -2666.0 kJ/mol.
answered
Jan 23
in
ThermoChemistry
0
votes
101
views
A student has 20 grams of iron and 40 grams of oxygen. What is the limiting reactant in the reaction between iron and oxygen to form iron oxide (FeO)? How many grams of FeO can be produced assuming complete reaction and no excess reactants?
answered
Jan 22
in
Chemical reactions
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