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How can chemistry students in developing countries overcome the limited availability of textbooks and resources to adequately prepare for their exams and improve their understanding of key concepts in the subject?
answered
22 hours
ago
in
Chemical education
1
answer
23
views
Calculate the standard enthalpy of precipitation for the reaction: AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq) given that the standard enthalpies of formation for AgNO3(aq), NaCl(aq), AgCl(s), and NaNO3(aq) are -123.2 kJ/mol, -407.3 kJ/mol, -127.0 kJ/mol, and -467.3 kJ/mol, respectively.
asked
2 days
ago
in
ThermoChemistry
1
answer
29
views
Calculate the standard enthalpy change for the reaction of the combustion of 1 mole of liquid ethanol (C2H5OH) at 298K and 1 atm. The balanced chemical equation for the reaction is: C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(l)Given:ΔHf°(C2H5OH(l)) = -277.7 kJ/molΔHf°(CO2(g)) = -393.5 kJ/molΔHf°(H2O(l)) = -285.8 kJ/molΔHf°(O2(g)) = 0 kJ/mol
answered
2 days
ago
in
Chemical thermodynamics
1
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50
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How do changes in pH affect the surface properties of biomembranes and how can this knowledge be applied in drug delivery systems?
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4 days
ago
in
Surface Chemistry
1
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46
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What is the critical temperature and pressure of benzene using Monte Carlo simulations of phase transitions?
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5 days
ago
in
Computational Chemistry
1
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51
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How can capillary electrophoresis be used to determine the amino acid composition of a protein sample?
asked
Jan 29
in
Analytical Chemistry
1
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57
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A chemistry student needs to determine the direction in which equilibrium will shift when the concentration of reactants in a reversible reaction is changed using Le Chatelier's principle. Given the reaction equation: 2SO2(g) + O2(g) ⇄ 2SO3(g), if the concentration of SO2 is increased, will the reaction shift to the left or right?
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Jan 22
in
Chemical reactions
1
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21
views
According to Trait Theory, how does a leader's intelligence impact their effectiveness?
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Jan 20
in
Psychology
1
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31
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What is the relationship between personality and behaviour?
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Jan 20
in
Psychology
1
answer
50
views
Who investigated bystander intervention?
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Jan 20
in
Psychology
1
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15
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Where does theoretical coherence refer to?
asked
Jan 16
in
Psychology
1
answer
27
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What is social loafing?
answered
Jan 10
in
Psychology
1
answer
22
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What's the term for a cyclic hydrocarbon with a carbon-carbon triple bond?
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Jan 8
in
Science
1
answer
14
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What is name of the phenomenon where similar traits evolve independently in species that do not share a common ancestry?
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Jan 6
in
Science
1
answer
65
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What are magnetites naturally attracted to?
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Jan 3
in
Science
1
answer
18
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Matching donor and recipient blood types is important because different blood types have different types of what?
asked
Dec 31, 2024
in
Science
1
answer
49
views
Injuries can be prevented by getting proper what?
asked
Dec 31, 2024
in
Science
1
answer
20
views
Colliding-beam accelerators create matter from what?
asked
Dec 30, 2024
in
Science
1
answer
57
views
Animals that have been modified to express recombinant dna are called what?
answered
Dec 30, 2024
in
Science
1
answer
8
views
What is the production of offspring without gamete fusion called?
asked
Dec 27, 2024
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Science
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