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How can the mechanical and thermal properties of polymer-based composites be optimized for specific aerospace applications?
answered
3 days
ago
in
Polymer Chemistry
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39
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Given the following information: A polymerization reaction has a heat of reaction of -150 kJ/mol and a Δn (change in moles of gas) of +2 moles gas/mol. If 5.0 g of the monomer is polymerized, what is the enthalpy change (in kJ) for the overall reaction?
answered
6 days
ago
in
ThermoChemistry
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26
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Calculate the standard enthalpy change and the standard entropy change for the reaction: 2HCl(g) + Mg(s) → MgCl2(s) + H2(g) Given the following standard enthalpy of formation values: - HCl(g) = -92.31 kJ/mol - MgCl2(s) = -641.8 kJ/mol - H2(g) = 0 kJ/mol - Mg(s) = 0 kJ/mol Also given the following standard molar entropy values:- HCl(g) = 186.9 J/Kmol - MgCl2(s) = 138.53 J/Kmol - H2(g) = 130.7 J/Kmol - Mg(s) = 32.85 J/Kmol
answered
Feb 3
in
Inorganic Chemistry
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44
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A student wants to determine the rate law for the reaction between compound A and compound B. The student measures the initial rate of the reaction under different conditions and records the following data:| Experiment | [A] (M) | [B] (M) | Initial Rate (M/s) ||------------|---------|---------|-------------------|| 1 | 0.1 | 0.1 | 4.22x10^-4 || 2 | 0.2 | 0.1 | 8.44x10^-4 || 3 | 0.1 | 0.2 | 1.69x10^-3 |What is the rate law expression for this reaction in terms of the rate constant, k?
answered
Jan 22
in
Chemical kinetics
0
votes
40
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According to Kohlberg, when does the conventional level of moral reasoning occur?
answered
Jan 15
in
Psychology
0
votes
10
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What are biological catalysts that speeds up biochemical reactions?
answered
Jan 2
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Science
0
votes
26
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For what kind of animal is communication essential?
answered
Dec 30, 2024
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Science
0
votes
36
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Carbonic acid decomposes easily at room temperature into carbon dioxide and what else?
answered
Dec 30, 2024
in
Science
0
votes
52
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All photosynthetic organisms contain a pigment called what?
answered
Dec 30, 2024
in
Science
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