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0
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26
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What is the optimum ratio of diisocyanate to polyol in the synthesis of polyurethane to achieve maximum mechanical strength?
answered
Feb 22
in
Chemical synthesis
0
votes
40
views
How does the mismatch repair system in DNA replication correct errors in base pairing that may cause mutations?
answered
Feb 21
in
BioChemistry
0
votes
45
views
How does the disposal of heavy metals from industrial waste affect the acidity levels of nearby water bodies, and what are the potential consequences for aquatic life and human health?
answered
Feb 19
in
Environmental Chemistry
0
votes
25
views
How does the concentration of heavy metals in water affect the survival and reproductive success of aquatic organisms?
answered
Feb 19
in
Environmental Chemistry
0
votes
37
views
What is the bond dissociation energy of the HCl molecule and how much energy is required to break this bond?
answered
Feb 18
in
Chemical bonding
0
votes
30
views
What is the role of Rubisco in the carbon fixation process during photosynthesis? How does its structure and function relate to its efficiency in fixing carbon dioxide?
answered
Feb 14
in
BioChemistry
0
votes
63
views
How can the surface area of a metal oxide be determined using gas adsorption?
answered
Feb 11
in
Surface Chemistry
0
votes
29
views
How can the properties of metal alloys be optimized for use in aerospace applications, taking into consideration factors such as strength, durability, and weight?
answered
Feb 10
in
Materials Chemistry
0
votes
90
views
Determine the bond energy required to break all the bonds in a molecule of methane (CH4) and calculate the total energy required to break all the bonds in 4.0 moles of methane. (Assume the bond energy values are: C-H bond energy = 413 kJ/mol and C-C bond energy = 347 kJ/mol)
answered
Feb 4
in
Chemical reactions
0
votes
86
views
When a reaction is at equilibrium and the pressure is increased, which direction (forward or reverse) will be favored according to Le Chatelier's principle? Explain your answer using the concepts of rate of collisions and equilibrium position.
answered
Jan 30
in
Chemical reactions
0
votes
100
views
A chemistry student must determine the maximum work that can be done by a gas held in a container with a fixed volume and temperature. Given the number of moles of gas and the pressure inside the container, use statistical mechanics and thermodynamic ensembles to calculate the maximum work that can be extracted from the gas.
answered
Jan 22
in
Physical Chemistry
0
votes
31
views
Why is the diathesis-stress model popular?
answered
Jan 17
in
Psychology
0
votes
47
views
What is a stratified sample?
answered
Jan 17
in
Psychology
0
votes
100
views
What are z-scores used for?
answered
Jan 16
in
Psychology
0
votes
37
views
When assessing the usefulness of a theory in existential psychology, what factors should be considered?
answered
Jan 16
in
Psychology
0
votes
50
views
What is the Dartmouth Conference?
answered
Jan 15
in
Psychology
0
votes
80
views
What is the observer-expectancy effect?
answered
Jan 15
in
Psychology
0
votes
37
views
What are some criticisms of psychodynamic theory?
answered
Jan 15
in
Psychology
0
votes
101
views
Which types of muscles cause bones to move when they retract?
answered
Jan 8
in
Science
0
votes
61
views
Which temperatures cause particles of reactants to have more energy?
answered
Jan 8
in
Science
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