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What is the effect of alloy composition and microstructure on the mechanical properties (such as tensile strength and ductility) of aluminum-copper alloys designed for use in aerospace applications?
asked
Feb 20
in
Materials Chemistry
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votes
1
answer
35
views
How does the critical temperature of a superconducting material depend on the chemical composition and crystal structure of the material, and how can this information be used to design and optimize superconducting materials for practical applications?
asked
Feb 19
in
Materials Chemistry
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votes
1
answer
45
views
How does the carbon footprint of a typical individual in the United States compare to that of an individual in a developing country, and what are the environmental implications of these differences?
asked
Feb 18
in
Environmental Chemistry
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votes
1
answer
34
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How can the yield and purity of the surfactant in the production of detergents be optimized through the choice of appropriate reaction conditions, such as temperature and pressure, and catalyst selection?
asked
Feb 14
in
Chemical engineering
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votes
1
answer
73
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What is the number of electrons transferred in a reaction where 2 moles of aluminum are oxidized and 3 moles of copper (II) ions are reduced in an electrolytic cell?
asked
Feb 13
in
ElectroChemistry
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votes
1
answer
40
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What is the oxidation state of nitrogen in the compound NH4+?
asked
Feb 13
in
Chemical reactions
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1
answer
40
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How can computational methods be utilized to predict and optimize the adsorption properties of metal-organic frameworks for the efficient removal of carbon dioxide from flue gas?
asked
Feb 5
in
Computational Chemistry
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votes
1
answer
81
views
Calculate the ΔHrxn for the combustion of methane gas (CH4) if the enthalpies of formation for methane, carbon dioxide, and water are -74.8, -393.5, and -285.8 kJ/mol respectively, using Hess's Law.
asked
Feb 3
in
Chemical reactions
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votes
1
answer
69
views
Calculate the standard enthalpy change for the sublimation of iodine solid to iodine gas at 298 K with the following given data: - Standard enthalpy of fusion of iodine: 15.52 kJ/mol- Standard molar entropy of iodine solid: 62.7 J/K/mol- Standard molar entropy of iodine gas: 260.6 J/K/mol
asked
Feb 3
in
Chemical thermodynamics
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votes
1
answer
96
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Calculate the standard enthalpy change for the reaction in which 50.0 mL of 1.0 M HCl is mixed with 50.0 mL of 1.0 M NaOH in a constant pressure calorimeter using the following data: the temperature of the HCl and NaOH solutions are both initially 25.0 °C, and the temperature of the mixture increases to 32.0 °C. The specific heat of the solution is 4.18 J/(g·°C) and the density of the solution is 1.00 g/mL. The reaction is: HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l)
asked
Feb 3
in
Chemical thermodynamics
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votes
1
answer
110
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How can we increase awareness and importance of environmental chemistry in chemistry education programs to encourage students to consider the impact of chemistry on the environment?
asked
Jan 30
in
Chemical education
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1
answer
101
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What is the chemical structure and nomenclature of N,N-Dimethylbenzylamine, and how does it compare to the chemical structure and nomenclature of Benzylamine?
asked
Jan 21
in
Organic Chemistry
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votes
1
answer
132
views
What are the main criticisms of the cognitive perspective?
asked
Jan 20
in
Psychology
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votes
1
answer
45
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How does naloxone affect the brain?
asked
Jan 20
in
Psychology
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votes
1
answer
19
views
What are the possible cognitive benefits of meditation for older adults?
asked
Jan 20
in
Psychology
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votes
1
answer
15
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What is the definition of a psychological disorder?
asked
Jan 14
in
Psychology
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votes
1
answer
87
views
What nerves are connected to the spinal cord?
asked
Jan 7
in
Science
0
votes
1
answer
34
views
What is the largest object in the solar system?
asked
Jan 7
in
Science
0
votes
1
answer
73
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What is defined as a close relationship between organisms of different species in which at least one of the organisms benefits?
asked
Jan 6
in
Science
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votes
1
answer
88
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What is a hydrocarbon in which there are only single covalent bonds?
asked
Jan 6
in
Science
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