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What is the reaction quotient, Q, for the chemical reaction below at 298K with [A] = 0.5 M, [B] = 2.0 M, and [C] = 1.0 M?2A + 3B ⇌ 4C
answered
5 days
ago
in
Chemical thermodynamics
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17
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What is the mechanism of the reaction of aniline and nitric acid to form p-nitroaniline and what is the role of sulfuric acid in the reaction?
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5 days
ago
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Chemical synthesis
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32
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What is the predicted boiling point of a substance with London dispersion forces and dipole-dipole interactions, compared to a substance with only London dispersion forces?
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5 days
ago
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Chemical bonding
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33
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How does the number of carbon atoms affect the electronic and optical properties of graphene and other 2D materials?
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5 days
ago
in
Quantum Chemistry
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9
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How does the molecular structure of a surfactant influence its surface tension reducing properties?
answered
6 days
ago
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Surface Chemistry
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22
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How can the use of a specific material affect the efficiency of a solar cell? Identify and characterize a new material that could potentially improve solar cell efficiency, and conduct experiments to test its effectiveness.
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Feb 20
in
Materials Chemistry
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votes
24
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What is the chemical equation for the combustion of propane (C3H8) and how much oxygen (O2) is required for the complete combustion reaction?
answered
Feb 18
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Chemical reactions
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votes
18
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What is the bond order of a nitrogen molecule (N2)?
answered
Feb 18
in
Chemical bonding
0
votes
28
views
How is the binding affinity of a particular protein-protein interaction affected by changes in pH?
answered
Feb 17
in
BioChemistry
0
votes
33
views
How can we design and synthesize a polymer-based optical material with tunable refractive index for use in optical lenses?
answered
Feb 12
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Polymer Chemistry
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votes
38
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How can computational methods be used to design and predict the properties of supramolecular assemblies formed by organic molecules?
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Feb 5
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Computational Chemistry
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66
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What is the concentration of iron (II) ion in a sample of drinking water using colorimetry, if the absorbance of the sample is found to be 0.294 and the molar absorption coefficient of iron (II) complex is 10,500 M^-1 cm^-1 at the wavelength of 505 nm?
answered
Jan 30
in
Analytical Chemistry
0
votes
11
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A small metal block is placed in a beaker containing boiling water. The block initially weighs 50 grams and its temperature is 25°C. After 5 minutes, its weight is 49 grams and its temperature is 80°C. Determine the entropy change of the metal block during this process assuming it to be irreversible.
answered
Jan 22
in
Physical Chemistry
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85
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A chemistry student wants to perform a reaction that produces carbon dioxide gas. If the student has 500 grams of calcium carbonate and an excess of hydrochloric acid, how many liters of carbon dioxide gas can be produced at Standard Temperature and Pressure (STP)? (Assume the reaction goes to completion)
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Jan 22
in
Chemical reactions
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62
views
Who developed the Maudsley model of family-based therapy?
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Jan 20
in
Psychology
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votes
35
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According to the social cognitive theory, what is the role of modelling in anxiety?
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Jan 17
in
Psychology
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votes
56
views
What is the handicap principle in evolutionary psychology?
answered
Jan 16
in
Psychology
0
votes
80
views
What is a p-value in hypothesis testing?
answered
Jan 16
in
Psychology
0
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49
views
Compare the theoretical mechanisms underlying the effects of stimulants in treating Attention-Deficit/Hyperactivity Disorder ADHD .
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Jan 16
in
Psychology
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64
views
Describe Social Cognitive Theory
answered
Jan 16
in
Psychology
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