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0
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27
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How does the intensity of light affect the rate of a photochemical reaction? Provide experimental evidence to support your answer.
answered
5 days
ago
in
Physical Chemistry
0
votes
30
views
What is the difference between primary, secondary, and tertiary alcohols and how does their chemical reactivity differ? Illustrate your answer with suitable examples.
answered
Feb 14
in
Organic Chemistry
0
votes
38
views
How might inadequate preparation for chemistry-related careers impact both the individual and the industry as a whole? What steps can be taken to better prepare students for these careers?
answered
Feb 13
in
Chemical education
0
votes
47
views
One potential question for a chemistry student to solve related to amino acid metabolism and biosynthesis could be: How does the activity of the enzyme glutamine synthetase contribute to the production of nonessential amino acids in the body?
answered
Feb 13
in
BioChemistry
0
votes
35
views
How can computational chemistry and molecular modeling be used to predict the chemical and physical properties of a new drug molecule before it's synthesized, allowing researchers to make informed decisions about its potential effectiveness and safety?
answered
Feb 6
in
Physical Chemistry
0
votes
34
views
How can chemistry teacher education be improved to better prepare teachers to effectively teach complex concepts and help students develop a strong foundation in chemistry?
answered
Feb 5
in
Chemical education
0
votes
11
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Consider a sample of aluminum oxide with a surface area of 100 m2/g. The BET model is used to measure the multilayer adsorption of nitrogen gas on the surface of the aluminum oxide. The experimental data obtained at 77 K is as follows:P/Po = 0.001 0.003 0.01 0.03 0.1 0.3 0.5 0.7 0.9 0.99 V(mL/g) = 7.15 23.20 69.15 194.10 587.58 876.59 962.23 1011.18 1049.03 1059.65Determine the BET constant, BET adsorption capacity, and the monolayer adsorption capacity for the aluminum oxide.
answered
Feb 3
in
Surface Chemistry
0
votes
80
views
How can the chemical engineer design a system for the production of water-based paints and coatings that meet environmental regulations while still maintaining high performance and durability requirements?
answered
Jan 30
in
Chemical engineering
0
votes
64
views
How can a chemical engineer design a process for the purification of a specific chemical compound, taking into account its physical and chemical properties, and ensuring maximum yield and purity while minimizing waste and cost?
answered
Jan 30
in
Chemical engineering
0
votes
63
views
Calculate the enthalpy change for the reaction: 2H2(g) + O2(g) --> 2H2O(g) given the following enthalpy changes: H2(g) + 1/2O2(g) --> H2O(g) ΔH1 = -286 kJ/molH2(g) + 1/2Cl2(g) --> HCl(g) ΔH2 = -92 kJ/mol Cl2(g) --> 2Cl(g) ΔH3 = +242 kJ/molHCl(g) + 1/2O2(g) --> H2O(g) + Cl2(g) ΔH4 = -184 kJ/mol
answered
Jan 23
in
Chemical reactions
0
votes
51
views
Calculate the energy required to break all the bonds in 1 mole of methane gas (CH4) at standard conditions, given that the bond energies of C-H and C-C bonds are 413 kJ/mol and 348 kJ/mol, respectively. Then, calculate the total energy released or absorbed during the combustion of 1 mole of methane gas with oxygen gas to form carbon dioxide gas and water vapor.
answered
Jan 23
in
Chemical reactions
0
votes
54
views
Calculate the change in entropy when 1 mole of methane gas (CH4) is burned completely in oxygen gas (O2) at constant pressure and 298 K.
answered
Jan 23
in
Chemical thermodynamics
0
votes
50
views
Calculate the amount of heat required to polymerize 2 moles of styrene into polystyrene given the following information:The enthalpy of polymerization for styrene is -56 kJ/mol and the reaction is exothermic.
answered
Jan 23
in
ThermoChemistry
0
votes
87
views
A chemistry student needs to determine the precipitate formed when 50 mL of 0.2 M silver nitrate solution is mixed with 75 mL of 0.1 M potassium chloride solution. What is the mass of the precipitate formed and what is the percent yield of the reaction?
answered
Jan 22
in
Chemical reactions
0
votes
28
views
What is medical psychology?
answered
Jan 17
in
Psychology
0
votes
13
views
What is the main criticism of the positivist approach?
answered
Jan 16
in
Psychology
0
votes
34
views
Why is the study of animal communication important in evaluating animal psychology?
answered
Jan 16
in
Psychology
0
votes
41
views
Who proposed the Cognitive Social Learning Theory?
answered
Jan 15
in
Psychology
0
votes
62
views
When did Rosenberg's Self-Esteem Scale develop?
answered
Jan 15
in
Psychology
0
votes
36
views
What is the cognitive abilities theory of aging?
answered
Jan 14
in
Psychology
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