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User BeatriceJ11
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0
votes
1
answer
83
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What are the factors that affect the photochemical properties and fluorescence emission of organic fluorescent dyes?
asked
Feb 22
in
PhotoChemistry
0
votes
1
answer
76
views
How does the orientational order of liquid crystal molecules change with temperature as determined by Monte Carlo simulations?
asked
Feb 22
in
Computational Chemistry
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1
answer
77
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What is the effect of increasing the concentration of AgNO3 on the solubility of AgCl in water? Include both the qualitative and quantitative analysis of the relationship between the two variables.
asked
Feb 19
in
Chemical equilibrium
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1
answer
91
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What is the chemical process responsible for the formation of acid rain and how does it affect soil pH levels and plant growth in forest ecosystems?
asked
Feb 18
in
Environmental Chemistry
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1
answer
87
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How do proton pump inhibitors (PPIs) interact with clopidogrel (an antiplatelet drug) at the molecular level and how does this interaction affect the overall effectiveness of clopidogrel therapy?
asked
Feb 14
in
Medicinal Chemistry
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1
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164
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What is the effect of changing the concentration of reactants on the reaction rate when using a single-step mechanism versus a multi-step mechanism in the reaction between hydrogen gas and iodine gas to form hydrogen iodide gas?
asked
Feb 13
in
Chemical kinetics
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1
answer
66
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How can we design a system for the production of hydrogen fuel that is both cost-effective and environmentally sustainable?
asked
Feb 12
in
Chemical engineering
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1
answer
85
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How can chemistry educators increase student awareness and implementation of appropriate safety protocols in the laboratory to prevent accidents and chemical mishaps?
asked
Feb 4
in
Chemical education
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1
answer
133
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Determine the standard enthalpy of formation of methane (CH4) using Hess's Law, given the following reactions and enthalpy changes: 1. C(graphite) + 2H2(g) -> CH4(g) ΔH1 = -74.6 kJ/mol 2. 2H2(g) + O2(g) -> 2H2O(l) ΔH2 = -571.7 kJ/mol 3. C(graphite) + O2(g) -> CO2(g) ΔH3 = -393.5 kJ/mol.
asked
Feb 4
in
Chemical thermodynamics
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1
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134
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Design a system for the efficient production of hydrogen fuel using renewable energy sources. Consider factors such as cost, environmental impact, and scalability. Determine the optimal method for producing and storing hydrogen fuel, and provide a detailed design for the system. Your solution should also include calculations for the efficiency and potential output of the system.
asked
Feb 4
in
Chemical engineering
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1
answer
134
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Calculate the standard enthalpy change for the reaction of the coordination compound Cu(NH3)4SO4 with excess NaOH to form Cu(OH)2(s), NH3(g), Na2SO4(aq), and H2O(l) at a constant pressure of 1 atm and a temperature of 25°C.
asked
Feb 3
in
Chemical thermodynamics
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1
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148
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What is the exact mechanism through which acid rain changes the pH of soil and water bodies, and what is its impact on aquatic organisms and agricultural productivity?
asked
Jan 30
in
Environmental Chemistry
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1
answer
176
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How does the pH value of water bodies affected by acid rain change over time, and how does this impact the aquatic life inhabiting those water bodies?
asked
Jan 30
in
Environmental Chemistry
0
votes
1
answer
135
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What is the color of a compound containing copper ions in a +2 oxidation state and sulfur ions that has been exposed to air for several weeks?
asked
Jan 30
in
Inorganic Chemistry
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1
answer
155
views
What is the concentration of Fe2+ ions in a given iron tablet using colorimetry?
asked
Jan 30
in
Analytical Chemistry
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1
answer
59
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According to the humanistic-existential theory, why is self-actualisation important?
asked
Jan 20
in
Psychology
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1
answer
130
views
What is the difference between a learning disability and a learning difficulty?
asked
Jan 17
in
Psychology
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1
answer
62
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How does the cognitive behavioural therapy help people overcome anxiety?
asked
Jan 15
in
Psychology
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1
answer
135
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What is the criticism of Maslow's hierarchy of needs?
asked
Jan 13
in
Psychology
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1
answer
76
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What is the observational study?
asked
Jan 13
in
Psychology
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