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Answers by QNZGertie668
0
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18
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How does the size and shape of microplastics affect their toxicity and accumulation in marine organisms?
answered
2 days
ago
in
Environmental Chemistry
0
votes
27
views
How does changing the pH of the solution affect the equilibrium position of the redox reaction between Fe3+ and I- ions? Provide a detailed explanation of the relationship between pH and equilibrium constant for this reaction.
answered
2 days
ago
in
Chemical equilibrium
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28
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What is the preferred method for synthesis of symmetrical ethers using alcohols and acids, and what are some limitations and drawbacks of this method?
answered
5 days
ago
in
Organic Chemistry
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24
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How does the prediction of electronic and magnetic properties of topological materials using quantum chemistry aid in the design and development of advanced electronic devices with improved performance and efficiency?
answered
5 days
ago
in
Quantum Chemistry
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votes
22
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What is the mechanism of the hydrogenation of ethyne to ethane using a palladium catalyst?
answered
6 days
ago
in
Organic Chemistry
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votes
21
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What is the critical micelle concentration of sodium dodecyl sulfate (SDS) in water at 25°C and how does it change with temperature?
answered
Feb 19
in
Surface Chemistry
0
votes
25
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What is the equilibrium constant for the reaction between nitrogen gas and hydrogen gas to form ammonia gas at 500°C given that the equilibrium concentrations are [N2] = 0.25 M, [H2] = 0.20 M and [NH3] = 0.10 M?
answered
Feb 17
in
Chemical equilibrium
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33
views
How can the chemical structure of existing cardiovascular drugs be modified to improve their efficacy and reduce their side effects?
answered
Feb 6
in
Medicinal Chemistry
0
votes
56
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Calculate the standard Gibbs free energy change for the following chemical reaction at 25°C:2H2(g) + O2(g) → 2H2O(l)The standard Gibbs free energy of formation at 25°C for H2O(l) is -237.2 kJ/mol, H2(g) is 0 kJ/mol, and O2(g) is 0 kJ/mol.
answered
Feb 3
in
Chemical thermodynamics
0
votes
74
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What is the effect of changing the concentration of reactants on the reaction rate and yield of a chemical reaction?
answered
Feb 3
in
Chemical kinetics
0
votes
73
views
What are the specific chemical reactions that occur in the bioluminescence of marine organisms, and how do the chemical structures of the light-emitting molecules contribute to their photochemical properties?
answered
Jan 31
in
PhotoChemistry
0
votes
58
views
Calculate the enthalpy change (in kJ/mol) for the polymerization of ethylene to polyethylene, given that the polymerization of 1 mole of ethylene produces 3 moles of polyethylene and the enthalpy change of the reaction is -32 kJ/mol.
answered
Jan 23
in
ThermoChemistry
0
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58
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Calculate the change in enthalpy for the following chemical reaction: CH4(g) + 2O2(g) -> CO2(g) + 2H2O(l) Given that the enthalpies of formation for CH4(g), CO2(g), and H2O(l) are -74.8 kJ/mol, -393.5 kJ/mol, and -285.8 kJ/mol respectively.
answered
Jan 23
in
Chemical reactions
0
votes
69
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A student wants to know the equilibrium concentration of hydrogen gas and nitrogen gas at a particular temperature and pressure when they are mixed in a container in a 2:1 ratio. The student also wants to calculate the equilibrium constant of the reaction when nitrogen and hydrogen form ammonia. Can you help the student by designing a step-by-step procedure to find the equilibrium concentrations and equilibrium constant at the given conditions?
answered
Jan 22
in
Physical Chemistry
0
votes
83
views
What is the IUPAC name of the following organic compound: CH3CH2CH2CH2COOH?
answered
Jan 21
in
Organic Chemistry
0
votes
56
views
What is the name of the theory that suggests that our behaviour is shaped by the environment?
answered
Jan 20
in
Psychology
0
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64
views
Why is reliability important in psychometrics?
answered
Jan 20
in
Psychology
0
votes
47
views
What is the role of attention in language processing?
answered
Jan 17
in
Psychology
0
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59
views
How might attachment theory inform end-of-life care?
answered
Jan 17
in
Psychology
0
votes
79
views
What is the difference between inter-rater reliability and intra-rater reliability?
answered
Jan 16
in
Psychology
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