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What is the optimal reaction conditions and catalyst for the synthesis of high molecular weight polypropylene from propylene monomer, and how does altering the reaction conditions affect the properties of the final polymer?
answered
Feb 21
in
Chemical synthesis
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27
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How does the chemical structure of metallofullerenes and metalloclusters affect their magnetic properties?
answered
Feb 18
in
Coordination Chemistry
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37
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What is the bond energy of the carbon-carbon bond in ethane (C2H6) if the energy required to break the bond is 346 kJ/mol?
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Feb 18
in
Chemical reactions
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39
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How does surface modification of polymers affect the adhesive properties of adhesives made from these modified polymers, and how can this be utilized in various applications?
answered
Feb 17
in
Surface Chemistry
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13
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How can we improve the selectivity and permeability properties of polymer-based membranes for water treatment, particularly in removing specific contaminants such as heavy metals or organic pollutants?
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Feb 13
in
Polymer Chemistry
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74
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What is the coordination geometry and oxidation state of the metal ion in the active site of the metalloenzyme cytochrome c oxidase?
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Feb 12
in
Coordination Chemistry
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139
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How can the surface properties of biomaterials be modified to promote attachment and growth of specific types of cells for tissue engineering applications?
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Feb 11
in
Materials Chemistry
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64
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How can the process of phytoremediation using hyperaccumulator plants be optimized to effectively remove heavy metals such as lead, arsenic, and cadmium from contaminated soil?
answered
Feb 10
in
Environmental Chemistry
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votes
32
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How can drug design strategies be used to target specific metabolic pathways involved in metabolic disorders such as diabetes or obesity?
answered
Feb 5
in
Medicinal Chemistry
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117
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Here's a problem for you to solve:What is the enthalpy change (∆H) for the combustion of methane (CH4) to form carbon dioxide (CO2) and water (H2O) based on the following information?CH4(g) + 2O2(g) -> CO2(g) + 2H2O(l) ∆H = -890.4 kJ/molYou have a sample of methane and you want to determine the heat released or absorbed during combustion. How much heat is produced when you burn 5.00 grams of methane (CH4) at a constant pressure of 1 atm, assuming that the products are carbon dioxide (CO2) and water (H2O) and that the heat capacity of the calorimeter is negligible?
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Feb 4
in
Physical Chemistry
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72
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Calculate the standard enthalpy of formation of methane gas (CH4) given the following data:- ∆H°combustion of methane = -890.36 kJ/mol - ∆H°formation of H2O (l) = -285.8 kJ/mol - ∆H°formation of CO2 (g) = -393.5 kJ/mol
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Feb 3
in
ThermoChemistry
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109
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A chemistry student needs to calculate the standard enthalpy change for the combustion reaction of methane gas (CH4) at 298 K and 1 atm pressure. The equation for the reaction is:CH4(g) + 2O2(g) --> CO2(g) + 2H2O(l)Given the following standard enthalpies of formation at 298 K:ΔHf(CO2) = -393.5 kJ/molΔHf(H2O) = -285.8 kJ/molΔHf(CH4) = -74.8 kJ/molCalculate ΔHrxn, the standard enthalpy change for the combustion reaction of methane gas.
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Jan 22
in
Chemical thermodynamics
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38
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Where was the first study on virtual reality exposure therapy conducted?
answered
Jan 20
in
Psychology
0
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99
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Who is more likely to engage in stereotype activation?
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Jan 20
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Psychology
0
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46
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What is the difference between a decision and a judgement?
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Jan 17
in
Psychology
0
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57
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What is the adaptive emotional processing theory?
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Jan 15
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Psychology
0
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85
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What factors contribute to resilience?
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Jan 14
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Psychology
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49
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What is the effect of sleep on attention?
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Jan 14
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Psychology
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90
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What is the difference between a mood disorder and an anxiety disorder?
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Jan 14
in
Psychology
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82
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What is intersectionality?
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Jan 14
in
Psychology
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