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0
votes
28
views
How does the change in pH affect the rate of the reaction between hydrochloric acid and magnesium?
answered
Feb 22
in
Chemical kinetics
0
votes
27
views
What is the impact of varying the concentration of reactants, temperature, and catalyst on the sustainability and rate of reaction in the iodine clock reaction?
answered
Feb 20
in
Chemical kinetics
0
votes
22
views
How does the intensity of visible light affect the rate of photochemical reactions involving the conversion of reactants to products?
answered
Feb 20
in
PhotoChemistry
0
votes
29
views
What is the amount of energy required to break the single C-H bond in the methane (CH4) molecule? Provide the answer in units of kilojoules per mole (kJ/mol).
answered
Feb 20
in
Chemical reactions
0
votes
27
views
What is the effect of pH on the electrokinetic potential of a colloidal system consisting of silica nanoparticles in aqueous solution?
answered
Feb 20
in
Surface Chemistry
0
votes
58
views
What is the impact of varying substrate concentration on the rate of enzyme catalyzed reaction in biochemistry?
answered
Feb 13
in
BioChemistry
0
votes
55
views
How can the synthesis of zeolites be improved to produce materials with greater efficiency and selectivity for specific applications?
answered
Feb 13
in
Materials Chemistry
0
votes
67
views
How does the number of layers in graphene affect its electrical conductivity?
answered
Feb 13
in
Materials Chemistry
0
votes
65
views
How can we design new chemical compounds that effectively target and treat the symptoms of inflammatory bowel disease (IBD), while minimizing unwanted side effects on other organs and systems of the body?
answered
Feb 12
in
Medicinal Chemistry
0
votes
76
views
How can we control the molecular weight of a polymer synthesized through free radical polymerization?
answered
Feb 12
in
Organic Chemistry
0
votes
65
views
How can the synthesis of metal-organic frameworks be optimized to achieve high yield and purity while minimizing the use of toxic solvents and reducing the environmental impact?
answered
Feb 11
in
Materials Chemistry
0
votes
31
views
How can the molecular weight and the degree of polymerization of polyvinylpyrrolidone be controlled during its synthesis from vinylpyrrolidone monomer?
answered
Feb 10
in
Chemical synthesis
0
votes
30
views
How can the mechanical and thermal properties of polymer-based composites be optimized for specific aerospace applications such as aircraft components or spacecraft structures?
answered
Feb 7
in
Polymer Chemistry
0
votes
36
views
How can the efficiency of polymer-based photovoltaic materials be improved by optimizing their molecular structure and properties?
answered
Feb 7
in
Polymer Chemistry
0
votes
35
views
How can crystallography and knowledge of crystal structures be used to determine the purity of a particular substance?
answered
Feb 5
in
Physical Chemistry
0
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80
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Calculate the standard enthalpy of formation, ΔH°f, of carbon dioxide (CO2) gas given the following thermochemical equations: C(s) + O2(g) → CO2(g) ΔH°rxn = -393.5 kJ/mol C(s) + O2(g) → CO(g) ΔH°rxn = -110.5 kJ/mol CO(g) + 1/2 O2(g) → CO2(g) ΔH°rxn = -283.0 kJ/mol Assume that all reactants and products are in their standard states.
answered
Feb 3
in
ThermoChemistry
0
votes
41
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Calculate the standard enthalpy of formation of water if you know that the standard enthalpy of combustion of hydrogen is -286 kJ/mol and the standard enthalpy of combustion of oxygen is -394 kJ/mol.
answered
Feb 3
in
Chemical thermodynamics
0
votes
83
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Calculate the standard enthalpy change for the neutralization reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH), given the appropriate thermochemical equations and the following information:- Heat evolved during the reaction, Q = -58.35 kJ/mol- Moles of HCl used, n(HCl) = 0.05 mol- Concentration of NaOH solution, c(NaOH) = 2 M- Volume of NaOH solution used, V(NaOH) = 25.0 mL (assuming density of 1.00 g/mL)Show your calculations and include units in your final answer.
answered
Feb 3
in
Chemical thermodynamics
0
votes
69
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Calculate the percentage change in the concentration of reactants and products in a chemical equilibrium when the concentration of a common ion is increased by 0.1M. The equilibrium constant for the reaction is Kc = 1.5 x 10^-5 M at a certain temperature.
answered
Feb 3
in
Chemical equilibrium
0
votes
119
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How do changes in the electronic structure of an enzyme’s active site affect its catalytic activity in the reaction of interest? Use computational tools to investigate the specific changes that occur in the active site of an enzyme and determine the resulting effects on the reaction mechanism.
answered
Jan 31
in
Computational Chemistry
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