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What is the reaction quotient (Q) for the following chemical reaction at 25°C, if the initial concentrations of A, B, and C are 0.2 M, 1.0 M, and 0.5 M, respectively?2A + 3B ↔ 4C
answered
3 days
ago
in
Chemical thermodynamics
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25
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What is the mechanism behind the ability of detergents to remove dirt and stains from clothes at the molecular level?
answered
5 days
ago
in
Surface Chemistry
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15
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What is the hybridization of the central atom in methane (CH4)?
answered
5 days
ago
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Chemical bonding
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30
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How does the chemical structure of DNA affect its interaction with specific proteins involved in gene regulation?
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Feb 18
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BioChemistry
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22
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What is the bond dissociation energy of the H2 molecule in kilojoules per mole? Given that the H2 molecule has a bond length of 0.74 Angstroms and the energy required to dissociate one mole of H2 into hydrogen atoms is 436 kJ/mol.
answered
Feb 18
in
Chemical bonding
0
votes
41
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If the system at equilibrium is affected by an increase in pressure, will the equilibrium shift towards the reactants or towards the products, assuming that the number of moles of gas is the same on both sides of the balanced chemical equation?
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Feb 13
in
Chemical equilibrium
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54
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How can the chemical properties of a specific compound be optimized to enhance its efficacy in treating a specific skin disease while minimizing potential side effects?
answered
Feb 6
in
Medicinal Chemistry
0
votes
32
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How can any newly developed treatment for gastrointestinal diseases target the specific site of inflammation in the gastrointestinal tract while avoiding adverse effects in other organs?
answered
Feb 4
in
Medicinal Chemistry
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12
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Consider a weak acid, HA, with a dissociation constant, Ka = 1.8 x 10^-5. What will be the effect on the concentration of [H3O+] and the degree of ionization of the acid if 0.1 moles of HCl is added to 1 liter of a 0.1 M solution of HA?
answered
Feb 3
in
Chemical equilibrium
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66
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Calculate the standard enthalpy of formation of hydrogen fluoride (HF) given the following reactions and enthalpy change values:2H2(g) + O2(g) → 2H2O(g) ΔH° = -484 kJH2(g) + Cl2(g) → 2HCl(g) ΔH° = -184 kJ1/2 F2(g) + H2(g) → HF(g) ΔH° = -273 kJ.
answered
Feb 3
in
ThermoChemistry
0
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84
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How does the limited understanding of chemical bonding and molecular structure affect the efficiency of common chemical reactions, such as combustion or synthesis? Provide specific examples and explanations.
answered
Jan 30
in
Chemical education
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votes
74
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What are the functional groups present in an unknown organic compound and what are their characteristic infrared absorption frequencies as determined through infrared spectroscopy analysis?
answered
Jan 30
in
Analytical Chemistry
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10
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A metal rod made of iron is coupled with a zinc rod in an aqueous medium. If the corrosion potential of the iron rod is -0.44 V and that of the zinc rod is -0.76 V, calculate the corrosion current density of the iron rod when coupled with the zinc rod at 25°C. The polarization resistance of the iron rod is 880 Ωcm².
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Jan 22
in
ElectroChemistry
0
votes
62
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Where does the Reid technique originate from?
answered
Jan 20
in
Psychology
0
votes
37
views
What is the Kitty Genovese murder case?
answered
Jan 20
in
Psychology
0
votes
61
views
What is the difference between discourse analysis and discursive psychology?
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Jan 16
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Psychology
0
votes
46
views
According to behaviour modification theory, how can behaviour be changed?
answered
Jan 16
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Psychology
0
votes
33
views
What is the theory of attachment?
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Jan 15
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Psychology
0
votes
41
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What is the difference between in-group and out-group bias?
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Jan 10
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Psychology
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13
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Which organisms capture light energy and convert it to chemical energy inside their cell?
answered
Jan 8
in
Science
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