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User DonnellBeckh
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1
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18
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What is the predicted molecular geometry and polarity of a water molecule?
asked
4 days
ago
in
Inorganic Chemistry
0
votes
1
answer
21
views
What is the mechanism of protein binding to DNA in regulating gene expression?
asked
5 days
ago
in
BioChemistry
0
votes
1
answer
27
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What is the balanced chemical equation for the single replacement reaction between zinc and hydrochloric acid to produce hydrogen gas and zinc chloride?
asked
Feb 17
in
Chemical reactions
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votes
1
answer
30
views
What is the oxidation state of chlorine in the compound HClO4?
asked
Feb 13
in
ElectroChemistry
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votes
1
answer
8
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How can we design a drug that targets the mutation responsible for sickle cell anemia, while avoiding harm to healthy cells and tissues in the body?
asked
Feb 12
in
Medicinal Chemistry
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votes
1
answer
41
views
How can the synthesis of polyvinyl chloride from vinyl chloride monomer be optimized to obtain a higher yield and purity?
asked
Feb 11
in
Chemical synthesis
0
votes
1
answer
38
views
How can the synthesis and characterization of new materials for use in fuel cells be optimized to improve the efficiency and durability of fuel cell technology?
asked
Feb 11
in
Materials Chemistry
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votes
1
answer
46
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How can the surface chemistry of adhesives and coatings be manipulated to achieve strong and durable bonding on different types of substrates, such as metals, plastics, and composites?
asked
Feb 11
in
Surface Chemistry
0
votes
1
answer
89
views
How do changes in atmospheric concentrations of greenhouse gases contribute to global warming and what chemical reactions are involved in their formation and breakdown?
asked
Jan 31
in
Environmental Chemistry
0
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1
answer
93
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How much would the equilibrium constant (Kc) change if a catalyst is added to the reaction system, given the initial concentration of reactants and products? Specifically, consider the equilibrium reaction: N2(g) + 3H2(g) ⇌ 2NH3(g)with an initial concentration of N2 = 0.10 M, H2 = 0.20 M, and NH3 = 0.25 M. The activation energy of the reaction is 150 kJ/mol and the catalyst lowers it by 50 kJ/mol. Calculate the change in Kc for this reaction when the catalyst is added to the system.
asked
Jan 30
in
Chemical equilibrium
0
votes
1
answer
81
views
A chemical engineer needs to design a distillation column for the separation of a mixture containing ethanol (boiling point of 78.4°C) and water. The desired composition of the distillate is a minimum of 90% ethanol. What is the minimum number of theoretical trays needed in the column to achieve this composition, given that the feed contains 40% ethanol and the reflux ratio is 1.5?
asked
Jan 22
in
Chemical engineering
0
votes
1
answer
90
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Where does the term 'existential' come from?
asked
Jan 20
in
Psychology
0
votes
1
answer
35
views
Please evaluate the criminal profiling.
asked
Jan 17
in
Psychology
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1
answer
48
views
Why is cognitive restructuring used in cognitive-behavioural therapy?
asked
Jan 17
in
Psychology
0
votes
1
answer
45
views
According to Allport's trait theory, what are cardinal traits?
asked
Jan 17
in
Psychology
0
votes
1
answer
78
views
What is the main criticism of discursive psychology?
asked
Jan 16
in
Psychology
0
votes
1
answer
47
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When is the use of antipsychotics not recommended in the treatment of obsessive-compulsive disorder OCD ?
asked
Jan 16
in
Psychology
0
votes
1
answer
59
views
Who proposed the 'Social Cognitive Theory'?
asked
Jan 16
in
Psychology
0
votes
1
answer
80
views
Who posits that the grieving process has six stages: shock, denial, bargaining, guilt, depression and acceptance?
asked
Jan 15
in
Psychology
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votes
1
answer
30
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How does behaviour psychology explain mental disorders?
asked
Jan 14
in
Psychology
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