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1
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89
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How does the route of administration affect the pharmacokinetics of a drug in the body, specifically in terms of absorption and distribution?
asked
Feb 24
in
Medicinal Chemistry
0
votes
1
answer
86
views
What is the optimum conditions (temperature, pressure, and reaction time) required for the preparation of 2-chloro-4-nitroaniline from aniline and chlorine gas with high yield and purity?
asked
Feb 22
in
Chemical synthesis
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votes
1
answer
87
views
What are the factors that affect the photochemical properties of dyes and pigments, and how can these factors be optimized for the efficient dyeing and coloring of various materials?
asked
Feb 22
in
PhotoChemistry
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votes
1
answer
95
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What are the key physical and chemical properties of polymers that make them suitable for 3D printing? Which specific polymers have the best properties for 3D printing and why?
asked
Feb 20
in
Materials Chemistry
0
votes
1
answer
79
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How has the historical and evolutionary development of chemistry shaped the current understanding and application of chemical principles and technologies?
asked
Feb 20
in
Chemical education
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votes
1
answer
82
views
What is the effect of varying concentrations of plasma treatment on the surface properties of a biopolymer-based biomaterial?
asked
Feb 20
in
Surface Chemistry
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1
answer
80
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How does the degree of entanglement of a molecular system affect its stability and reactivity?
asked
Feb 19
in
Quantum Chemistry
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1
answer
89
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What is the coordination number and geometry of the lanthanide complex [Eu(H2O)8]Cl3? Explain the factors that determine the coordination number and geometry for lanthanide complexes.
asked
Feb 19
in
Coordination Chemistry
0
votes
1
answer
92
views
What are the optimum reaction conditions for synthesizing polyacrylonitrile from acrylonitrile monomer?
asked
Feb 14
in
Chemical synthesis
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votes
1
answer
119
views
What is the effect of increasing the concentration of a salt solution on its conductivity and how does this relate to the number of ions present in the solution?
asked
Feb 13
in
Inorganic Chemistry
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1
answer
102
views
How will an increase in pressure affect the equilibrium position of a chemical reaction if the reaction involves equal numbers of gaseous reactants and products, and the total number of moles of gas remains constant?
asked
Feb 13
in
Chemical equilibrium
0
votes
1
answer
105
views
How can the levels of volatile organic compounds (VOCs) in indoor air be measured and controlled to improve indoor air quality and prevent adverse health effects?
asked
Feb 7
in
Environmental Chemistry
0
votes
1
answer
90
views
How can chemistry students effectively supplement limited opportunities for hands-on experimentation in the classroom to enhance their understanding of complex chemical concepts?
asked
Feb 4
in
Chemical education
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votes
1
answer
90
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How can chemistry educators effectively teach the applications of chemistry in various industries, such as pharmaceuticals, agriculture, and manufacturing, to help students understand the role of chemistry in society and the economy?
asked
Feb 4
in
Chemical education
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votes
1
answer
88
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Calculate the standard enthalpy change for the formation of ethylene oxide (C2H4O) given the following reaction:C2H4(g) + 1.5 O2(g) -> C2H4O(g)Given the standard enthalpy of formation of C2H4(g) = 52.5 kJ/mol and that of O2(g) = 0 kJ/mol, determine the standard enthalpy of formation of C2H4O(g).
asked
Feb 3
in
Chemical thermodynamics
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votes
1
answer
177
views
What is the composition of a mixture containing benzene, toluene, and xylene using gas chromatography analysis?
asked
Jan 30
in
Analytical Chemistry
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votes
1
answer
78
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Calculate the enthalpy of precipitation when 50.0 mL of 0.200 M BaCl2(aq) is added to 30.0 mL of 0.150 M Na2SO4(aq).
asked
Jan 23
in
ThermoChemistry
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votes
1
answer
98
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Calculate the enthalpy change for the polymerization of ethylene to polyethylene if it is known that the heat of combustion of ethylene is -1411 kJ/mol and the enthalpy of formation of polyethylene is -248 kJ/mol. Assume that the reaction occurs at constant pressure and temperature of 25°C.
asked
Jan 23
in
ThermoChemistry
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votes
1
answer
95
views
A student attempted to produce 25 grams of product by performing a chemical reaction, but only obtained 18 grams. What was the percent yield for this reaction?
asked
Jan 22
in
Chemical reactions
0
votes
1
answer
155
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Identify the name of the following compound: CH3CH2CH2OH.
asked
Jan 21
in
Organic Chemistry
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