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0
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30
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How does the release of heavy metals from an industrial project, such as a mining operation, impact the water quality of nearby rivers and lakes?
answered
Feb 24
in
Environmental Chemistry
0
votes
25
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How does the rate of reaction affect the selectivity of reaction in the synthesis of methyl salicylate from salicylic acid and methanol? Can you propose a mechanism to explain the observed selectivity at different reaction rates?
answered
Feb 22
in
Chemical kinetics
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votes
27
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What is the optimal ratio of diisocyanate and polyol for synthesizing polyurethane with the maximum mechanical strength and thermal stability?
answered
Feb 21
in
Chemical synthesis
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32
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What is the maximum adsorption capacity of nitrogen gas on a certain adsorbent material at a temperature of 25°C and a pressure of 5 atm, based on the Langmuir adsorption isotherm with a constant K of 0.2 L/mol?
answered
Feb 20
in
Surface Chemistry
0
votes
28
views
What is the dipole moment of carbon monoxide molecule and how is it calculated?
answered
Feb 19
in
Chemical bonding
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36
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How does the composition of a cell membrane affect its permeability to different molecules? Provide a detailed explanation with specific examples.
answered
Feb 18
in
BioChemistry
0
votes
32
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How do supramolecular assemblies affect the photochemical properties of organic compounds and how can this phenomenon be utilized in inorganic chemistry?
answered
Feb 14
in
PhotoChemistry
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29
views
What is the predicted reactivity of the elements potassium and chlorine when combined to form KCl based on their respective electronic configurations?
answered
Feb 14
in
Inorganic Chemistry
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votes
27
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How does Molecular Dynamics simulation help in studying the complex formation of host-guest systems in supramolecular chemistry?
answered
Feb 13
in
Computational Chemistry
0
votes
60
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How can we improve the durability and scratch-resistant properties of polymer-based coatings and paints for automotive applications?
answered
Feb 13
in
Polymer Chemistry
0
votes
48
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How can the chemical composition and formulation of a natural cosmetic product be optimized to ensure adequate shelf life and stability while maintaining its effectiveness and desirable sensory properties?
answered
Feb 6
in
Chemical engineering
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votes
34
views
How can chemistry teachers provide better support for students with learning disabilities in the classroom to ensure they have equal access to learning opportunities and achieve success in the subject?
answered
Feb 5
in
Chemical education
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votes
36
views
How can a distillation column be designed to effectively separate a binary mixture of ethanol and water with a specific composition, using commonly available materials and maximizing efficiency while minimizing heat loss?
answered
Feb 4
in
Chemical engineering
0
votes
91
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Calculate the standard enthalpy change for the following reaction: 2H2(g) + O2(g) → 2H2O(l)Given the standard enthalpies of formation for H2O (l), H2 (g) and O2 (g) are -285.8 kJ/mol, 0 kJ/mol and 0 kJ/mol, respectively.
answered
Feb 3
in
Chemical thermodynamics
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58
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How can gas chromatography be used to determine the composition and quantity of individual components in a mixture of hydrocarbons?
answered
Jan 29
in
Analytical Chemistry
0
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65
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A steel pipe is in contact with a copper pipe in a galvanic couple, with the steel pipe acting as the anode. The corrosion current density of the steel pipe in the couple is 0.008 mA/cm². Determine the rate of corrosion of the steel pipe, assuming that the density of steel is 7.8 g/cm³ and the thickness of the pipe is 2.5 mm. Also, calculate the time taken for the pipe to corrode completely, assuming an initial mass of 5 kg.
answered
Jan 22
in
ElectroChemistry
0
votes
83
views
What was the aim of the Minnesota Starvation Experiment?
answered
Jan 20
in
Psychology
0
votes
45
views
Who created the PERMA model?
answered
Jan 20
in
Psychology
0
votes
67
views
Who proposed the dialectical behaviour therapy approach to treating eating disorders?
answered
Jan 20
in
Psychology
0
votes
48
views
Where does the sociocultural model suggest that behaviour is influenced by?
answered
Jan 20
in
Psychology
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