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0
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27
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How does the purity of graphene affect its electronic properties, and how can we optimize the synthesis method to achieve high purity graphene for use in electronic devices?
answered
5 days
ago
in
Materials Chemistry
0
votes
38
views
Identify the type of inorganic solid that forms from the combination of Mg and Cl atoms.
answered
Feb 18
in
Inorganic Chemistry
0
votes
27
views
What is the balanced redox reaction for the combustion of methane (CH4) in the presence of oxygen (O2) to form carbon dioxide (CO2) and water (H2O)?
answered
Feb 17
in
Chemical reactions
0
votes
28
views
What is the balanced chemical equation for the double replacement reaction between sodium hydroxide (NaOH) and hydrochloric acid (HCl)?
answered
Feb 17
in
Chemical reactions
0
votes
31
views
How can we optimize the production process of ammonium-based fertilizers to increase yield and reduce energy consumption?
answered
Feb 14
in
Chemical engineering
0
votes
53
views
How can you distinguish between ortho, meta, and para isomers of monosubstituted aromatic compounds using chemical tests?
answered
Feb 12
in
Organic Chemistry
0
votes
43
views
How can the process parameters be optimized for the production of polymers with a high molecular weight and narrow size distribution, using the available equipment and raw materials?
answered
Feb 10
in
Chemical engineering
0
votes
30
views
How can the critical temperature of a superconducting material be optimized to increase its electrical conductivity and practical applications?
answered
Feb 6
in
Materials Chemistry
0
votes
25
views
How can computational methods be used to design and predict the properties of supramolecular assemblies formed by organic molecules?
answered
Feb 5
in
Computational Chemistry
0
votes
49
views
Given the balanced chemical equation: C6H12O6 + 6O2 -> 6CO2 + 6H2O The enthalpy of formation of glucose is -1273 kJ/mol and the enthalpy of formation of water is -286 kJ/mol. Calculate the enthalpy change of the oxidation of glucose in kJ/mol.
answered
Feb 4
in
ThermoChemistry
0
votes
58
views
Determine the polarity of the H-Cl bond in hydrogen chloride molecule, given the electronegativity values of hydrogen and chlorine to be 2.2 and 3.0, respectively.
answered
Feb 4
in
Chemical bonding
0
votes
42
views
Calculate the monolayer capacity and specific surface area of a sample of silica gel using BET theory. The sample was found to have a weight of 2.56 g and a total surface area of 260 m²/g. The gas used for adsorption was nitrogen at a temperature of 77 K and a pressure range of 0.01-0.3 P/P₀. The plot of (P/P₀)/(V₀/V) versus P/P₀ generated a straight line with a slope of 4.2×10⁻³.
answered
Feb 3
in
Surface Chemistry
0
votes
90
views
How do the electronic and optical properties of a nanomaterial change as the size of the nanoparticle is decreased? Using quantum chemistry calculations, determine the relationship between the nanoparticle size and its electronic and optical properties.
answered
Jan 31
in
Quantum Chemistry
0
votes
77
views
What are the main advantages and disadvantages of using polymer-based electronic materials compared to traditional materials in electronic devices such as transistors, solar cells, and light-emitting diodes?
answered
Jan 31
in
Polymer Chemistry
0
votes
84
views
What strategies can a chemistry student utilize to comprehend and master complex chemical concepts effectively?
answered
Jan 30
in
Chemical education
0
votes
103
views
A chemistry student wants to determine the effect of adding more reactant or product on the equilibrium position of a chemical reaction. The student has a 0.50 M solution of N2O4 and NO2 at equilibrium at 25°C, with the equation N2O4(g) <--> 2NO2(g). If the student adds more N2O4 to the reaction mixture, what will happen to the equilibrium concentration of NO2? Will it increase, decrease or stay the same? Justify your answer with a chemical equation and relevant calculations.
answered
Jan 22
in
Chemical equilibrium
0
votes
52
views
According to Piaget's cognitive development theory, what are the four stages of cognitive development?
answered
Jan 20
in
Psychology
0
votes
29
views
How can statistical inference be used to draw conclusions in psychology research?
answered
Jan 20
in
Psychology
0
votes
52
views
How might self-esteem theory be relevant to end-of-life care?
answered
Jan 20
in
Psychology
0
votes
46
views
According to the visual search task, how do people search for a target item amidst distractors?
answered
Jan 20
in
Psychology
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