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How does the pore size and shape of zeolites affect their catalytic activity in the cracking of hydrocarbons? Use computational methods to predict the optimal pore size and shape for maximizing catalytic activity for a particular hydrocarbon.
answered
Feb 22
in
Computational Chemistry
0
votes
29
views
What are the optimal reaction conditions (temperature, time, and stoichiometry) required for the synthesis of polyurethane from diisocyanate and polyol to achieve the desired mechanical properties and maximum yield?
answered
Feb 21
in
Chemical synthesis
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62
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How does the type of molecular structure of a liquid crystal affect its properties and behavior? Specifically, compare and contrast the properties and behavior of nematic and smectic liquid crystals.
answered
Feb 13
in
Physical Chemistry
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votes
73
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How does the type of catalyst and the surface area of the catalyst affect the rate of a specific reaction in heterogeneous catalysis?
answered
Feb 13
in
Surface Chemistry
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votes
56
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How can we improve the performance of polymer-based membranes for water treatment, particularly in terms of their selectivity and permeability?
answered
Feb 13
in
Polymer Chemistry
0
votes
57
views
How does the Crystal Field Theory explain the colors observed in coordination compounds? Provide specific examples and explain the relevant factors that influence the color of each compound.
answered
Feb 12
in
Coordination Chemistry
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votes
64
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How can the synthesis of biodegradable polymers be optimized to improve their biodegradability while maintaining their mechanical properties for practical applications?
answered
Feb 11
in
Polymer Chemistry
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votes
43
views
How can the mechanical properties (tensile strength, fracture toughness, etc.) of polymer-based composites for aerospace applications be improved without compromising their lightweight characteristic?
answered
Feb 10
in
Polymer Chemistry
0
votes
45
views
How can the incorporation of nanoparticles to polymer-based composites enhance their mechanical and thermal properties for their use in aerospace applications?
answered
Feb 7
in
Polymer Chemistry
0
votes
34
views
How can the design of drugs targeting specific types of bacteria be improved to increase efficacy while minimizing negative side effects on the host?
answered
Feb 7
in
Medicinal Chemistry
0
votes
61
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Calculate the standard enthalpy change for the precipitation reaction between aqueous silver nitrate (AgNO3) and aqueous sodium chloride (NaCl) to form solid silver chloride (AgCl) and aqueous sodium nitrate (NaNO3), given the following balanced chemical equation:AgNO3 (aq) + NaCl (aq) → AgCl (s) + NaNO3 (aq) Assume that the reaction takes place under standard conditions (25°C and 1 atm) and that all solutions are at 1 M concentration.
answered
Feb 3
in
Chemical thermodynamics
0
votes
76
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Calculate the lattice energy of MgO if the charge on the magnesium ion is +2 and the charge on the oxide ion is -2. The ionic radius of Mg2+ is 0.072 nm and the ionic radius of O2- is 0.140 nm.
answered
Jan 23
in
Inorganic Chemistry
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votes
96
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A student mixed 10 grams of iron and 15 grams of oxygen to produce iron oxide. What is the limiting reactant and what is the mass of the iron oxide produced? (Assume all reactions are complete)
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Jan 22
in
Chemical reactions
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105
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A student measures the current in a galvanic cell with a standard potential of 1.10 V, using a Zinc electrode and a Copper electrode. The student recorded the current as 0.50 A. What is the rate of the electrochemical reaction occurring in the cell?
answered
Jan 22
in
ElectroChemistry
0
votes
69
views
When can cognitive load, according to cognitive load theory, be reduced?
answered
Jan 17
in
Psychology
0
votes
105
views
According to the biological theory, what is the role of genetic factors in anxiety?
answered
Jan 17
in
Psychology
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votes
41
views
Where can we find opportunities for future research in organisational psychology?
answered
Jan 16
in
Psychology
0
votes
42
views
What is bias in research?
answered
Jan 16
in
Psychology
0
votes
34
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What are Type I errors?
answered
Jan 16
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Psychology
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116
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Who created the ABC model of cognitive behaviour therapy?
answered
Jan 15
in
Psychology
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