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User CarrieMadiso
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0
votes
73
views
How does the crystallization process affect the morphology of polymers and its mechanical properties?
answered
Feb 19
in
Polymer Chemistry
0
votes
66
views
How does the binding of metal ions to specific amino acid residues in metalloenzymes and metalloproteins affect their catalytic activity and overall function?
answered
Feb 17
in
Coordination Chemistry
0
votes
86
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How can the efficiency of a solar cell be improved by synthesizing and characterizing new materials for use as the absorber layer? Specifically, what properties should the new material possess to achieve optimal energy conversion and what are the best methods for characterizing these properties?
answered
Feb 7
in
Materials Chemistry
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votes
84
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How can Computational chemistry and molecular modeling be used to predict the properties of a new drug candidate?
answered
Feb 6
in
Physical Chemistry
0
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155
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Calculate the standard enthalpy change for the reaction between calcium oxide (CaO) and water (H2O) to form calcium hydroxide (Ca(OH)2), given that all species are in their standard state and that the balanced chemical equation is:CaO(s) + H2O(l) → Ca(OH)2(s)The standard enthalpies of formation of CaO(s), H2O(l) and Ca(OH)2(s) are -635.1 kJ/mol, -285.8 kJ/mol, and -986.2 kJ/mol respectively.
answered
Feb 3
in
Chemical thermodynamics
0
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145
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Calculate the standard enthalpy change for the fusion of 100 grams of ice at 0°C to liquid water at 0°C. The specific heat capacity of water is 4.184 J/g°C, the standard enthalpy of fusion of water is 6.01 kJ/mol, and the molar mass of water is 18.015 g/mol. Assume all heat absorbed is used to melt the ice and the temperature remains constant.
answered
Feb 3
in
Chemical thermodynamics
0
votes
105
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What vibrational frequencies and infrared spectra results would be obtained for the molecule acetic acid (CH3COOH) using the quantum mechanical method of calculation?
answered
Jan 31
in
Quantum Chemistry
0
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149
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What is the concentration of a solution containing an unknown amount of lead ions if it requires 25 milliliters of 0.1 M potassium iodide (KI) solution to titrate completely in a polarographic analysis?
answered
Jan 30
in
Analytical Chemistry
0
votes
154
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How can we use polarography to measure the concentration of lead (II) ions in a water sample obtained from a contaminated site?
answered
Jan 30
in
Analytical Chemistry
0
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91
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How can the concentration of copper ions in a wastewater sample from a factory be determined using polarography?
answered
Jan 29
in
Analytical Chemistry
0
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106
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Calculate the enthalpy change for the reaction below using Hess's Law and the given thermochemical equations:2H2(g) + O2(g) -> 2H2O(g) deltaH1 = -484 kJ/molH2(g) + 1/2O2(g) -> H2O(g) deltaH2 = -242 kJ/mol 2H2O(g) -> 2H2(g) + O2(g) deltaH3 = +484 kJ/mol
answered
Jan 23
in
ThermoChemistry
0
votes
83
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Consider the following equation: Fe + HCl --> FeCl3 + H2. If you have 10 grams of Fe and an excess of HCl, what mass of H2 will be produced?
answered
Jan 21
in
Inorganic Chemistry
0
votes
114
views
What is the negative interpersonal interactions explanation of personality disorders?
answered
Jan 20
in
Psychology
0
votes
56
views
When treating eating disorders, what is cognitive remediation therapy?
answered
Jan 17
in
Psychology
0
votes
53
views
What is iconic memory?
answered
Jan 17
in
Psychology
0
votes
39
views
What is the difference between a correlation and a causal inference in theory evaluation?
answered
Jan 16
in
Psychology
0
votes
113
views
How can we determine the theoretical elegance of psychodynamic theories?
answered
Jan 16
in
Psychology
0
votes
47
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Why is the strain theory criticised?
answered
Jan 16
in
Psychology
0
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25
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How is hypothesis development different in qualitative research?
answered
Jan 15
in
Psychology
0
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52
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What model describes the structure of the plasma membrane as a mosaic of components?
answered
Jan 7
in
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