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0
votes
34
views
What is the effect of increasing the concentration of the reaction product on the rate of reaction, using the reaction between hydrogen peroxide and potassium iodide as an example?
answered
Feb 22
in
Chemical kinetics
0
votes
29
views
How does the particle size of nanomaterials affect their catalytic activity in a specific reaction, and what is the optimal size range for maximum efficiency?
answered
Feb 22
in
Materials Chemistry
0
votes
30
views
How does the molecular weight and composition of a polymer affect its properties for use in 3D printing?
answered
Feb 21
in
Materials Chemistry
0
votes
32
views
What is the impact of the industrial project XYZ Chemical Company on the water quality of the nearby river and how can it be mitigated through the application of appropriate wastewater treatment technologies?
answered
Feb 20
in
Environmental Chemistry
0
votes
34
views
What is the hybridization of the carbon atoms in the molecule C2H4 (ethene)?
answered
Feb 20
in
Chemical bonding
0
votes
26
views
How does the crosslink density of a bioink affect the mechanical properties of tissue scaffolds in tissue engineering applications?
answered
Feb 19
in
Materials Chemistry
0
votes
27
views
How does the coordination environment of the metal ion in the active site of metalloenzymes and metalloproteins affect their catalytic activity?
answered
Feb 19
in
Coordination Chemistry
0
votes
39
views
How can we optimize the composition of a paint formulation to achieve the desired color, durability, and viscosity, while minimizing the use of toxic or harmful chemicals?
answered
Feb 14
in
Chemical engineering
0
votes
59
views
How do heavy metals, such as lead and mercury, impact the quality of soil and water in the environment and what are the most effective methods for mitigating this toxicity?
answered
Feb 13
in
Environmental Chemistry
0
votes
33
views
How can chemistry students increase their chances of finding internships and job opportunities in fields that interest them, despite the limited availability of such opportunities?
answered
Feb 5
in
Chemical education
0
votes
110
views
Determine the oxidation state of chlorine in HClO3.
answered
Feb 4
in
Chemical reactions
0
votes
63
views
Calculate the standard enthalpy change of the formation of water (H2O) given the following data:- Standard enthalpy of formation of hydrogen gas (H2) = 0 kJ/mol- Standard enthalpy of formation of oxygen gas (O2) = 0 kJ/mol- Standard enthalpy of formation of water vapor (H2O(g)) = -241.8 kJ/mol
answered
Feb 3
in
Chemical thermodynamics
0
votes
56
views
Calculate the standard enthalpy change of the following reduction reaction if the standard enthalpy of formation of FeO is -272.0 kJ/mol and that of Fe is 0 kJ/mol.FeO(s) + H2(g) → Fe(s) + H2O(l)
answered
Feb 3
in
ThermoChemistry
0
votes
62
views
How does changing the pH of a solution affect the formation of a complex ion using the example of [Cu(H2O)6]2+ forming [Cu(NH3)4(H2O)2]2+ at different pH values? Provide an explanation based on Le Chatelier's principle.
answered
Feb 3
in
Chemical equilibrium
0
votes
144
views
How do changes in the electronic structure of a molecule affect its magnetic properties and how can these changes be quantitatively calculated using quantum chemistry calculations? Specifically, investigate how the presence or absence of unpaired electrons in a molecule influences its magnetic susceptibility and how this can be predicted using theoretical models.
answered
Jan 31
in
Quantum Chemistry
0
votes
123
views
What is the effect of adding different amounts of titanium on the strength and hardness of a particular alloy made of aluminum and copper, and how does this affect its suitability for use in aerospace applications?
answered
Jan 30
in
Materials Chemistry
0
votes
122
views
What is the concentration of iron ions in a sample of tap water using spectrophotometry?
answered
Jan 30
in
Analytical Chemistry
0
votes
94
views
Calculate the enthalpy of reduction for the reaction: Fe2O3(s) + 3CO(g) → 2Fe(s) + 3CO2(g)given that the standard enthalpy of formation of Fe2O3(s), CO(g), and CO2(g) are -824kJ/mol, -110.5kJ/mol, and -393.5kJ/mol respectively. Assume all reactants and products are in their standard states.
answered
Jan 23
in
ThermoChemistry
0
votes
81
views
Calculate the bond dissociation energy (in kJ/mol) for the carbon-hydrogen bond in methane (CH4) using the following information: - The enthalpy change for the reaction CH4(g) + 2O2(g) → CO2(g) + 2H2O(g) is -890.3 kJ/mol. - The enthalpy change for the reaction 2H2(g) + O2(g) → 2H2O(g) is -484.2 kJ/mol.
answered
Jan 23
in
ThermoChemistry
0
votes
40
views
Why is it important for researchers to acknowledge cultural biases in their research?
answered
Jan 16
in
Psychology
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