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24
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What is the mechanism for the reaction between ethene and hydrogen bromide, and what is the nature of the intermediate(s) involved in this reaction?
answered
3 days
ago
in
Organic Chemistry
0
votes
12
views
What is the optimal reaction conditions (temperature, pressure, and concentration) for the preparation of phenylalanine from benzyl chloride and ammonia, and how do these conditions affect the yield and purity of the final product?
answered
3 days
ago
in
Chemical synthesis
0
votes
18
views
How does the molecular weight of a polymer affect its suitability for use in 3D printing, and what methods can be used to control and optimize the molecular weight for this application?
answered
4 days
ago
in
Materials Chemistry
0
votes
15
views
How does the metabolic pathway of glucose differ between a normal cell and a cancerous cell, and what potential targets can be identified for cancer treatment based on this difference?
answered
4 days
ago
in
BioChemistry
0
votes
20
views
How does the degradation of microplastics in marine environments affect the release of harmful chemicals and their potential impact on the health of marine species?
answered
6 days
ago
in
Environmental Chemistry
0
votes
31
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What is the bond dissociation energy of methane (CH4) at standard conditions (25°C and 1 atm)? Given that the enthalpy change of the reaction CH4(g) → C(g) + 4H(g) is 1665 kJ/mol.
answered
Feb 18
in
ThermoChemistry
0
votes
37
views
How can we design a new drug molecule that selectively targets the immune cells responsible for the development of autoimmune diseases and avoids interfering with healthy cells?
answered
Feb 12
in
Medicinal Chemistry
0
votes
40
views
What type of inorganic solid is copper (II) sulfate, and what properties can be used to identify its classification as ionic, covalent, or metallic?
answered
Feb 12
in
Inorganic Chemistry
0
votes
7
views
How do Chlorofluorocarbons (CFCs) interact with ozone molecules and what is the impact of this interaction on the ozone layer? Additionally, what methods can be used to mitigate the negative effects of CFCs on the ozone layer?
answered
Feb 12
in
Environmental Chemistry
0
votes
35
views
How can the mechanical properties, such as the tensile strength and elasticity, of 3D-printed polymer-based materials be optimized for specific applications?
answered
Feb 10
in
Polymer Chemistry
0
votes
32
views
How can chemistry students overcome the limited availability of chemistry-related internships and job opportunities to gain the necessary experience for their future careers?
answered
Feb 5
in
Chemical education
0
votes
70
views
Determine the entropy change for the combustion of methane gas (CH4) at constant pressure and 298 K. Given the standard molar entropy values are: S°(CH4) = 186 J/mol.K, S°(O2) = 205 J/mol.K, S°(CO2) = 214 J/mol.K and S°(H2O) = 188 J/mol.K.
answered
Feb 4
in
Chemical thermodynamics
0
votes
45
views
Calculate the standard enthalpy change for the reaction between [Fe(H2O)6]2+ and 2Cl- ions to produce [FeCl4]2- complex ion given that the enthalpy of formation for [FeCl4]2- is -392 kJ/mol and the enthalpies of hydration for Fe2+ and Cl- ions are -340 kJ/mol and -381 kJ/mol, respectively.
answered
Feb 3
in
Chemical thermodynamics
0
votes
61
views
Calculate the enthalpy change of dissolving 5.00 g of NaOH in 100.0 g of water. The temperature of the resulting solution increases from 25.00°C to 31.50°C. The specific heat capacity of the resulting solution is 4.18 J/g°C.
answered
Jan 23
in
ThermoChemistry
0
votes
71
views
A chemistry student is given the following information: A galvanic cell is set up consisting of a copper electrode in a copper (II) ion solution connected by a salt bridge to a silver electrode in a silver ion solution. The concentration of the copper (II) solution is 0.10 M and the concentration of the silver ion solution is 0.025 M. The measured potential of the cell is 0.66 V. Calculate the resistance of this electrochemical cell.
answered
Jan 22
in
ElectroChemistry
0
votes
91
views
What is the IUPAC name of the following organic compound?CH3CH2CH2COOH
answered
Jan 21
in
Organic Chemistry
0
votes
78
views
According to the trait theory of personality, what are the basic dimensions of individual differences?
answered
Jan 20
in
Psychology
0
votes
77
views
Why do some researchers suggest that power imbalances and perceived injustice may contribute to terrorism?
answered
Jan 20
in
Psychology
0
votes
31
views
What is the cognitive-behavioural model of health?
answered
Jan 20
in
Psychology
0
votes
58
views
Who came up with the concept of the looking glass self?
answered
Jan 17
in
Psychology
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