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0
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1
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25
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What is the isomerism of the molecule CH3CH=CHCH3 and how many isomers it has?
asked
6 days
ago
in
Chemical bonding
0
votes
1
answer
23
views
What is the bond enthalpy of the carbon-oxygen double bond in carbon dioxide (CO2)?
asked
Feb 18
in
Chemical bonding
0
votes
1
answer
51
views
How can the surface properties of polymers be modified to enhance adhesion between two different polymer surfaces?
asked
Feb 11
in
Polymer Chemistry
0
votes
1
answer
36
views
How can the production process of a specific specialty chemical be optimized to increase yield and reduce waste while maintaining product quality and purity?
asked
Feb 10
in
Chemical engineering
0
votes
1
answer
34
views
How can the adhesive properties of a polymer be optimized for a specific application, such as bonding two different materials with varying surface energies?
asked
Feb 6
in
Polymer Chemistry
0
votes
1
answer
41
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How can schools and universities increase the availability and accessibility of chemistry-related extracurricular activities for students who are interested in pursuing a career in chemistry?
asked
Feb 5
in
Chemical education
0
votes
1
answer
68
views
Design a distillation column to separate a mixture of ethanol and water with an initial composition of 40% ethanol and 60% water. The column should achieve a separation of at least 95% ethanol in the distillate product. The available packing materials are Pall rings with a diameter of 1.5 inches and a height of 2 inches. The column inlet flow rate is 1000 kg/hr with a pressure of 1 atm and a temperature of 80°C. The column should have 25 theoretical plates and operate at reflux ratios ranging from 1.5 to 3.0. Additionally, the column diameter should not exceed 3 feet. Provide the design calculations and specifications for the distillation column.
asked
Feb 4
in
Chemical engineering
+1
vote
1
answer
88
views
How does alternative splicing affect the structure and function of proteins produced by a single gene? Provide an example of a protein that undergoes alternative splicing and explain the different functional consequences of the spliced variants.
asked
Jan 31
in
BioChemistry
0
votes
1
answer
73
views
Identify the structure of an unknown compound with a mass-to-charge ratio (m/z) of 112 using mass spectrometry. What is the molecular formula of the compound based on the information obtained from the mass spectrum?
asked
Jan 30
in
Analytical Chemistry
0
votes
1
answer
49
views
How can electrophoresis be used to determine the composition and concentration of different proteins in a biological sample?
asked
Jan 29
in
Analytical Chemistry
0
votes
1
answer
47
views
Calculate the heat of crystallization (in kJ/mol) of NaOH if 25g of NaOH dissolves in 100g of water at 25°C and releases 4.75kJ of heat.
asked
Jan 23
in
ThermoChemistry
0
votes
1
answer
56
views
Calculate the efficiency of an electrochemical cell with a standard potential of +0.80 V if the cell potential under operating conditions is +0.60 V and the current passing through the cell is 2.5 A.
asked
Jan 23
in
ElectroChemistry
0
votes
1
answer
63
views
What is the systematic name of the following compound? CH3CH2CH2OH
asked
Jan 21
in
Organic Chemistry
0
votes
1
answer
45
views
Please evaluate the ethics of research with Indigenous or minority populations.
asked
Jan 20
in
Psychology
0
votes
1
answer
57
views
What is the importance of the Bioecological Model of Human Development?
asked
Jan 15
in
Psychology
0
votes
1
answer
15
views
According to Martin Seligman's learned helplessness theory, why do some people experience depression?
asked
Jan 15
in
Psychology
0
votes
1
answer
28
views
What is the diffusion of water through a semipermeable membrane according to the concentration gradient of water across the membrane
asked
Jan 6
in
Science
0
votes
1
answer
54
views
The production of light by living things is called what?
asked
Jan 2
in
Science
0
votes
1
answer
34
views
The fast motion of gas particles gives them a relatively large amount of what energy?
asked
Jan 2
in
Science
0
votes
1
answer
52
views
Oxygen is essentially just a waste product of the light reactions of what?
asked
Dec 31, 2024
in
Science
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