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1
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27
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How does the size and shape of gold nanoparticles affect their surface plasmon resonance (SPR) properties?
asked
Feb 24
in
Physical Chemistry
0
votes
1
answer
29
views
What is the effect of changes in pH on the reaction rate between hydrochloric acid (HCl) and magnesium (Mg)?
asked
Feb 22
in
Chemical kinetics
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1
answer
25
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How does the photochemical activity of luminescent materials vary with changes in their composition and structure?
asked
Feb 22
in
PhotoChemistry
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1
answer
38
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What is the predicted geometry and polarity of the NO<sub>2</sub><sup>-</sup> ion?
asked
Feb 21
in
Inorganic Chemistry
0
votes
1
answer
41
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How can the synthesis of zeolites be optimized to ensure maximum purity, uniformity, and reproducibility of these materials?
asked
Feb 14
in
Materials Chemistry
0
votes
1
answer
29
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What is the mechanism of action and chemical signaling pathways of the hormone insulin in the regulation of glucose metabolism in the body?
asked
Feb 13
in
BioChemistry
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1
answer
94
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What are the mechanical properties of hydrogels used in tissue engineering and how can they be optimized to improve their biocompatibility and promote cell growth and differentiation?
asked
Feb 13
in
Materials Chemistry
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1
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47
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How do genetic variations affect the metabolism and effectiveness of drugs used in the treatment of diabetes, and what are the implications of this for personalized medicine?
asked
Feb 13
in
Medicinal Chemistry
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1
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63
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How can we design drugs that target specific genetic mutations responsible for causing inherited diseases, such as cystic fibrosis or sickle cell anemia, while avoiding off-target effects on healthy cells?
asked
Feb 12
in
Medicinal Chemistry
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1
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99
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Design a chemical reactor for the reaction A + B --> C at a rate of 2 moles/min, with a reaction temperature of 300°C and a pressure of 3 atm. The reaction is exothermic and has a heat of reaction of -200 kJ/mol. The reactants A and B are fed into the reactor at a flow rate of 1 mole/min each. Choose the appropriate reactor design and calculate the volume needed to achieve a conversion of 95%.
asked
Feb 3
in
Chemical engineering
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1
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131
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Assuming that the volume of the system is constant, how will the equilibrium concentration of reactants and products be affected if the temperature is increased for the following reaction: 2 SO2(g) + O2(g) ⇌ 2 SO3(g) (a) Predict the direction of the reaction shift and explain why(b) Predict the effect of the temperature change on the equilibrium value of Kc for the reaction.
asked
Jan 22
in
Chemical equilibrium
0
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1
answer
152
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A chemistry student needs to calculate the enthalpy of adsorption for NH3 gas onto a silica gel adsorbent. The mass of silica gel used is 5.00g and the initial temperature of the system is 298K. The student also measures the equilibrium pressure of the NH3 gas at 298K to be 0.222atm. To carry out the experiment, the student passes NH3 gas over the silica gel and waits until it reaches equilibrium. The temperature of the system is then measured to be 305K. Using this information, what is the enthalpy of adsorption of NH3 onto the silica gel adsorbent in kJ/mol?
asked
Jan 22
in
ThermoChemistry
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1
answer
97
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Which of the following synthesis methods would you use to prepare a symmetric ether with the molecular formula C4H10O: A) Williamson ether synthesis using sodium hydride and 1-bromobutaneB) Acid-catalyzed dehydration of 2-butanolC) Nucleophilic substitution of 1-chlorobutane with sodium ethoxideD) Ring-opening of an epoxide with ethylamineExplain your reasoning for choosing the method and provide the chemical equation for the reaction.
asked
Jan 21
in
Organic Chemistry
0
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1
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86
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Where was the first study on attentional bias modification ABM conducted?
asked
Jan 20
in
Psychology
0
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1
answer
58
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What is cognitive load theory?
asked
Jan 17
in
Psychology
0
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1
answer
51
views
Why is peer review important for theory evaluation?
asked
Jan 16
in
Psychology
0
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1
answer
70
views
When was the trait theory of personality disorders developed?
asked
Jan 16
in
Psychology
0
votes
1
answer
98
views
What is a gender stereotype?
asked
Jan 16
in
Psychology
0
votes
1
answer
35
views
Who developed the theory of Social Representations?
asked
Jan 15
in
Psychology
0
votes
1
answer
79
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What is the concrete operational stage?
asked
Jan 14
in
Psychology
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