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How does the concentration of heavy metals in soil affect the growth of plants, and what mechanisms can be used to decrease the toxicity of these heavy metals in the environment?
asked
Feb 19
in
Environmental Chemistry
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votes
1
answer
29
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How can we design a new chemotherapy drug that targets cancer cells specifically, without harming healthy cells, and how can we ensure that the drug reaches the cancer cells effectively?
asked
Feb 12
in
Medicinal Chemistry
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1
answer
90
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How can the properties of polymer-based adhesives and sealants be optimized for specific applications such as bonding different types of materials (e.g. metal and plastic) or resisting environmental factors like heat and moisture?
asked
Feb 10
in
Polymer Chemistry
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1
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39
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How can the maximum yield of acetylsalicylic acid be obtained during the preparation process using acetic anhydride and salicylic acid?
asked
Feb 7
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Chemical synthesis
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1
answer
29
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How can complex chemical concepts be simplified and better understood for students struggling to grasp them?
asked
Feb 5
in
Chemical education
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1
answer
13
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How can chemistry teachers spark interest in the subject among students who perceive it as difficult and uninteresting?
asked
Feb 5
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Chemical education
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1
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114
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How does the bond length between two hydrogen atoms change as the distance between them increases from 0.5 Å to 2.0 Å, as determined by ab initio calculations of molecular properties using a specific quantum chemical method?
asked
Jan 31
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Computational Chemistry
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70
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Calculate the enthalpy change when 50 mL of water at 20°C is mixed with 30 mL of ethanol at 30°C. The specific heat capacity of water is 4.18 J g^-1 °C^-1, the specific heat capacity of ethanol is 2.44 J g^-1 °C^-1, and the density of both water and ethanol are 1 g/mL. Assume that the final mixture is at a uniform temperature.
asked
Jan 23
in
ThermoChemistry
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83
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Calculate the enthalpy change for the combustion of methane gas (CH4) using Hess's Law, given the following equations and enthalpy changes: C(s) + O2(g) → CO2(g), ΔH = -393.5 kJ/mol2H2(g) + O2(g) → 2H2O(l), ΔH = -571.6 kJ/mol CH4(g) + 2O2(g) → CO2(g) + 2H2O(l), ΔH = ?
asked
Jan 23
in
ThermoChemistry
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votes
1
answer
49
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Please evaluate the Marshmallow test.
asked
Jan 20
in
Psychology
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1
answer
85
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When applying social cognitive theory in parenting, what is suggested for parents who are role models?
asked
Jan 20
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Psychology
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1
answer
37
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Why did Festinger propose the concept of cognitive dissonance?
asked
Jan 17
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Psychology
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1
answer
51
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Who is credited with the development of confirmatory factor analysis?
asked
Jan 17
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Psychology
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1
answer
56
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What is the main criticism of cognitive dissonance theory?
asked
Jan 16
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Psychology
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1
answer
56
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According to Erikson's psychosocial theory, what is the central conflict in adolescence?
asked
Jan 16
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Psychology
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1
answer
74
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What is the role of emotion-focused coping strategies?
asked
Jan 14
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Psychology
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votes
1
answer
33
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What is the nature-nurture debate?
asked
Jan 13
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Psychology
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1
answer
42
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What type of electrons are electrons that are not confined to the bond between two atoms?
asked
Jan 8
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Science
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1
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73
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What done ozone help protect against?
asked
Jan 6
in
Science
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1
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49
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What are 2 common growth patterns of population?
asked
Jan 2
in
Science
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