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0
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33
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How does the concentration of reactants affect the reaction rate and consequently, the reaction yield in the reaction between hydrochloric acid and calcium carbonate?
answered
3 days
ago
in
Chemical kinetics
0
votes
18
views
What is the stepwise mechanism of the preparation of 2-chloro-4-nitroaniline from aniline and chlorine gas, and what are the optimum conditions required for the reaction to proceed with maximum yield?
answered
3 days
ago
in
Chemical synthesis
0
votes
26
views
What is the effect of different polymer structures on the efficiency of polymer-based photovoltaic cells?
answered
5 days
ago
in
Polymer Chemistry
0
votes
18
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What is the coordination number of Gd3+ ion in GdCl3 and how does its coordination environment change when it forms a complex with EDTA ligand?
answered
6 days
ago
in
Coordination Chemistry
0
votes
32
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How do the spectroscopic techniques like UV-Vis, IR, and NMR help in characterizing coordination compounds and determining their electronic and geometric structure?
answered
Feb 14
in
Coordination Chemistry
0
votes
10
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How can we design a drug that specifically targets the cell wall of gram-negative bacteria, such as Escherichia coli, without affecting the cells of the human host?
answered
Feb 12
in
Medicinal Chemistry
0
votes
34
views
How does the crystal field theory explain the color of transition metal complexes and their magnetic properties, and how can it be applied to predict the spectrochemical series of ligands in coordination chemistry?
answered
Feb 12
in
Coordination Chemistry
0
votes
48
views
Calculate the standard enthalpy change (ΔH°) for the reaction of combustion of 1 mole of ethanol (C2H5OH) given that the standard enthalpy of formation (ΔH°f) for ethanol and carbon dioxide (CO2) are -277.7 kJ/mol and -393.5 kJ/mol respectively, and the standard enthalpy of formation (ΔH°f) for water (H2O) is -285.8 kJ/mol. The balanced chemical equation for the reaction is as follows:C2H5OH (l) + 3 O2 (g) → 2 CO2 (g) + 3 H2O (l)
answered
Feb 3
in
Chemical thermodynamics
0
votes
63
views
How do we calculate the electronic and optical properties of perovskite materials using quantum chemistry methods such as density functional theory (DFT) and time-dependent DFT?
answered
Jan 31
in
Quantum Chemistry
0
votes
13
views
What is the concentration of heavy metals (such as lead, cadmium, and nickel) in the groundwater surrounding a landfill site, considering the influence of landfill leachate discharge?
answered
Jan 31
in
Environmental Chemistry
0
votes
60
views
Balance the following chemical equation: Fe + O2 -> Fe2O3
answered
Jan 22
in
Chemical reactions
0
votes
65
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A chemistry student needs to determine the percent composition of nitrogen (N) in a sample of an unknown organic compound. Using elemental analysis, the student determines the mass of the sample to be 0.254 g and the mass of the products after combustion to be 0.727 g of CO2 and 0.298 g of H2O. What is the percent composition of nitrogen in the sample?
answered
Jan 22
in
Analytical Chemistry
0
votes
44
views
When can personality traits be beneficial?
answered
Jan 20
in
Psychology
0
votes
68
views
Who developed the Cognitive Processing Therapy CPT and what were its main assumptions?
answered
Jan 20
in
Psychology
0
votes
20
views
Why is operationalizing a variable important?
answered
Jan 20
in
Psychology
0
votes
38
views
What is the main strength of the biological perspective?
answered
Jan 16
in
Psychology
0
votes
50
views
How can Vygotsky's theory of social development be evaluated?
answered
Jan 16
in
Psychology
0
votes
14
views
What are some strengths of using theoretical frameworks in qualitative research?
answered
Jan 16
in
Psychology
0
votes
40
views
According to the cognitive-behavioural theory, how do people with eating disorders develop negative thoughts about their bodies?
answered
Jan 15
in
Psychology
0
votes
42
views
What is the adaptive emotional processing theory?
answered
Jan 15
in
Psychology
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