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1
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3
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How do the properties of the polymer coating, such as adhesion, hardness, and scratch resistance, affect its performance in protecting surfaces from environmental factors like UV radiation, water exposure, and corrosive materials?
asked
3 days
ago
in
Polymer Chemistry
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votes
1
answer
28
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How do the electronic and optical properties of graphene and 2D materials vary with changes in their structural defects and doping level?
asked
5 days
ago
in
Quantum Chemistry
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1
answer
19
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How does the coordination number of metal ions affect the formation and properties of metal-organic frameworks?
asked
6 days
ago
in
Coordination Chemistry
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1
answer
24
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How does the cooling rate affect the crystal structure and morphology of polyethylene during polymer crystallization?
asked
6 days
ago
in
Polymer Chemistry
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1
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29
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What is the predicted color of a transition metal complex with coordination number 4 and a d4 electron configuration?
asked
6 days
ago
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Inorganic Chemistry
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1
answer
28
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What is the difference in the reaction mechanism between the addition of hydrogen to an alkene and an alkyne? Provide a detailed explanation for the observed difference in product formation.
asked
Feb 17
in
Organic Chemistry
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1
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22
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How does surface modification of polymers, such as plasma treatment or chemical functionalization, affect their hydrophobicity and adhesion properties?
asked
Feb 17
in
Surface Chemistry
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1
answer
27
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Identify the type of bonding present in solid sodium chloride and explain how it differs from covalent and metallic bonding.
asked
Feb 14
in
Chemical bonding
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1
answer
33
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How can we accurately predict the crystal structure of inorganic solids based on their chemical composition and other physical characteristics?
asked
Feb 14
in
Inorganic Chemistry
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1
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37
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How do the physical and chemical properties of persistent organic pollutants affect their behavior in the environment, and what methods can chemists use to prevent or remediate their negative impacts on ecosystems?
asked
Feb 14
in
Environmental Chemistry
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1
answer
43
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What is the net ATP yield during glycolysis? Explain the steps involved in the process and provide a detailed explanation of the chemical reactions involved.
asked
Feb 13
in
BioChemistry
0
votes
1
answer
61
views
How does changing the concentration of a reactant affect the rate and profitability of a chemical reaction?
asked
Jan 31
in
Chemical kinetics
0
votes
1
answer
85
views
What is the concentration of copper (II) ions present in a water sample collected from a polluted river using polarography?
asked
Jan 30
in
Analytical Chemistry
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1
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51
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Calculate the enthalpy of combustion for sucrose (C₁₂H₂₂O₁₁) given that 5.25 g of sucrose were burned in a bomb calorimeter and the temperature rose by 2.75 °C. The heat capacity of the calorimeter is 20.45 kJ/°C.
asked
Jan 23
in
ThermoChemistry
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1
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59
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Calculate the enthalpy change (ΔH) for the isomerization of butene-1 to butene-2, given that the heat of combustion of butene-1 and butene-2 are -2657.7 kJ/mol and -2674.4 kJ/mol, respectively.
asked
Jan 23
in
ThermoChemistry
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1
answer
82
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A chemistry student is required to determine the cathodic and anodic Tafel slopes for a reaction occurring at an electrode surface. The current density at the cathodic surface is known to be 1.8 mA/cm² and the current density at the anodic surface is known to be 1.2 mA/cm². The current potential relationship is given by the Tafel equation:log (i) = log (i0) + β_c * (E-E_c) for cathodic reactionlog (i) = log (i0) + β_a * (E-E_a) for anodic reactionWhere i is the current density, i0 is the exchange current density, β_c and β_a are the cathodic and anodic Tafel slopes respectively, E is the elect
asked
Jan 22
in
ElectroChemistry
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1
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48
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What is the pH of a 0.1 M solution of nitric acid (HNO3) assuming complete ionization?
asked
Jan 21
in
Inorganic Chemistry
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1
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66
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What product(s) will result from the reaction between 1-bromopropane and sodium hydroxide under SN2 reaction conditions?
asked
Jan 21
in
Organic Chemistry
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1
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80
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How many stereoisomers are possible for a compound with the molecular formula C<sub>4</sub>H<sub>9</sub>Br if it contains one chiral carbon atom?
asked
Jan 21
in
Organic Chemistry
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1
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42
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What are the three stages of the Reid technique?
asked
Jan 20
in
Psychology
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