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User AOVFlorrie80
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How does the size and shape of a nanoscale system affect the quantum transport properties of molecules within the system, and what are the implications of these properties on the functionality and efficiency of molecular electronic devices?
answered
Feb 24
in
Quantum Chemistry
0
votes
99
views
How does the presence and distribution of active sites on solid surfaces affect the rate of catalytic reactions in heterogeneous catalysis?
answered
Feb 22
in
Surface Chemistry
0
votes
89
views
What is the optimal ratio of diisocyanate to polyol required for the synthesis of polyurethane with maximum tensile strength and elongation at break?
answered
Feb 21
in
Chemical synthesis
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votes
96
views
What is the optimal ratio of acetic anhydride to salicylic acid for the highest yield of acetylsalicylic acid during the synthesis process?
answered
Feb 21
in
Chemical synthesis
0
votes
89
views
What is the metal ion at the active site of the enzyme carbonic anhydrase, and how does it facilitate the conversion of carbon dioxide into bicarbonate?
answered
Feb 20
in
Coordination Chemistry
0
votes
95
views
How does the interaction between Warfarin (an anticoagulant drug) and Aspirin impact their effectiveness in treating blood clotting disorders?
answered
Feb 20
in
Medicinal Chemistry
0
votes
82
views
What is the equilibrium constant expression for the reaction of a weak acid HA dissociating in water, and how would you determine the equilibrium constant (Ka) experimentally using pH measurements?
answered
Feb 20
in
Chemical equilibrium
0
votes
96
views
How does the coordination chemistry of iron in hemoglobin facilitate its role in oxygen transport and binding in the human body?
answered
Feb 19
in
Coordination Chemistry
0
votes
92
views
How can inadequate training for chemistry teachers be addressed to improve students' understanding and interest in chemistry?
answered
Feb 6
in
Chemical education
0
votes
93
views
How can inadequate preparation for chemistry exams impact a student's grades and overall academic performance? Specifically, what study methods and strategies can be employed to improve understanding and retention of key concepts in chemistry?
answered
Feb 5
in
Chemical education
0
votes
91
views
How can Fourier Transform Infrared Spectroscopy (FTIR) be used to identify the chemical composition of a polymer sample?
answered
Feb 5
in
Polymer Chemistry
0
votes
141
views
Calculate the standard enthalpy change for the reaction: 2C2H5OH(l) + 9O2(g) -> 6CO2(g) + 8H2O(l) given that the standard enthalpy of formation for C2H5OH(l) is -278 kJ/mol, for CO2(g) is -394 kJ/mol and for H2O(l) is -286 kJ/mol.
answered
Feb 3
in
Chemical thermodynamics
0
votes
207
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Calculate the standard enthalpy change for the phase transition reaction where 100.0 grams of solid water (ice) at -10.0 °C is heated to form 100.0 grams of liquid water at 10.0 °C, given the specific heat capacities of ice and water are 2.09 J/g·°C and 4.18 J/g·°C, respectively, and the enthalpy of fusion of water is 6.01 kJ/mol.
answered
Feb 3
in
Chemical thermodynamics
0
votes
136
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What is the bond angle between the hydrogen atoms in a water molecule according to quantum mechanics?
answered
Jan 30
in
Physical Chemistry
0
votes
89
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A student wants to electroplate a nickel wire with copper. The student has 1 g of copper sulfate and a 2 M solution of sulfuric acid. The wire has a surface area of 3 cm², and the desired copper thickness on the wire is 0.025 cm. How long should the student electroplate the wire with a current of 1.5 A to achieve the desired thickness of copper? Calculate the current density in the electrochemical cell.
answered
Jan 22
in
ElectroChemistry
0
votes
68
views
What is Gestalt psychology's principle of closure?
answered
Jan 20
in
Psychology
0
votes
149
views
Where does cognitive psychology suggest that emotions come from?
answered
Jan 20
in
Psychology
0
votes
103
views
Where did Elizabeth Loftus conduct her research on eyewitness testimony?
answered
Jan 17
in
Psychology
0
votes
116
views
How does biopsychology approach studying emotions?
answered
Jan 17
in
Psychology
0
votes
59
views
What is the role of spirituality in end of life care?
answered
Jan 13
in
Psychology
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