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What is the relationship between the electronegativity difference and the type of bonding (ionic, polar covalent, or nonpolar covalent) in chemical compounds? How does this relationship affect the properties of the compounds?
answered
Feb 24
in
Chemical education
0
votes
30
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What is the specific mechanism and reaction conditions necessary for the preparation of 2,4-dinitrobenzoic acid from benzoic acid and nitric acid, and what intermediate products are formed during the process?
answered
Feb 22
in
Chemical synthesis
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34
views
How does the temperature and pressure affect the phase transition of water from liquid to gas as modeled through Monte Carlo simulations?
answered
Feb 22
in
Computational Chemistry
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39
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What is the molar mass of calcium nitrate, Ca(NO3)2?
answered
Feb 21
in
Inorganic Chemistry
0
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36
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What is the mechanism behind the destructive impact of chlorofluorocarbons (CFCs) on the ozone layer, and how can this mechanism be leveraged to develop alternative compounds that do not harm the ozone layer?
answered
Feb 19
in
Environmental Chemistry
0
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30
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How does the addition of inhibitors affect the rate of corrosion on a metal surface, and what specific molecular interactions contribute to this effect?
answered
Feb 17
in
Surface Chemistry
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28
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How does the addition of a solvent affect the folding of a particular protein, and what parameters can be modified to optimize the folding process in molecular dynamics simulations?
answered
Feb 17
in
Computational Chemistry
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70
views
What is the effect of doping nitrogen onto the electronic and optical properties of graphene and other 2D materials and how can it be accurately calculated using quantum chemistry methods?
answered
Feb 12
in
Quantum Chemistry
0
votes
61
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Calculate the standard entropy change for the reaction: 2H2 (g) + O2 (g) -> 2H2O (g) given the standard enthalpy of formation of H2O (g) is -241.8 kJ/mol at 298 K.
answered
Feb 3
in
Inorganic Chemistry
0
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89
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What teaching methods can be utilized to foster interest and engagement in chemistry among high school students who have previously shown a lack of interest in the subject?
answered
Jan 30
in
Chemical education
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votes
101
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How can practical applications of chemistry be integrated and emphasized more effectively in chemical education to help students better bridge the gap between theory and real-life scenarios?
answered
Jan 30
in
Chemical education
0
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79
views
What is the concentration of iron ions in a water sample collected from a local lake using polarography technique?
answered
Jan 30
in
Analytical Chemistry
0
votes
133
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What is the chemical formula of the unknown compound that has a molecular ion peak (M+) at m/z 146, and major fragment peaks at m/z 120 and 105 in the mass spectrum, and has the molecular ion peak four times more intense than the base peak? Use mass spectrometry to identify the unknown compound.
answered
Jan 30
in
Analytical Chemistry
0
votes
69
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Calculate the enthalpy of desorption for water molecules from the surface of a silica gel at a temperature of 25°C using the following information:- The vapor pressure of water at 25°C is 3.17 kPa.- The surface area of the silica gel is 25 cm².- The mass of the silica gel used in the experiment is 2.5 g.
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Jan 23
in
ThermoChemistry
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100
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A chemical reaction was carried out at constant temperature and pressure. The initial concentration of the reactants and products were known. After a certain amount of time, the concentration of the reactants and products were measured. Using non-equilibrium thermodynamics, calculate the magnitude and sign of the entropy change of the system during the reaction.
answered
Jan 22
in
Physical Chemistry
0
votes
79
views
According to Socioemotional Selectivity Theory, how do individuals prioritise their social relationships in later life?
answered
Jan 20
in
Psychology
0
votes
44
views
What are the implications of social learning theory for personality disorders?
answered
Jan 20
in
Psychology
0
votes
88
views
When might mindfulness-based interventions be useful?
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Jan 20
in
Psychology
0
votes
55
views
Who developed the cognitive map theory?
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Jan 17
in
Psychology
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83
views
What is the theory of the broaden-and-build theory?
answered
Jan 15
in
Psychology
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